Bumps the maven group in /tools/java/cpp-build with 1 update: [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf).


Updates `com.google.protobuf:protobuf-java` from 3.24.0 to 3.25.5
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](https://github.com/protocolbuffers/protobuf/compare/v3.24.0...v3.25.5)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:production
  dependency-group: maven
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: mandlil <138015259+mandlil@users.noreply.github.com>

* Metadata updates for release 8.13.50

* Update .gitignore

---------

Co-authored-by: mandlil <138015259+mandlil@users.noreply.github.com>

* Generate RegionCode constants for testing.

This generates the RegionCode class that contains string constants for testing using the build tools.

Context: b/237181793

* Fix typo

* Use plain strings for region codes not in the metadata.

* Apply code review suggestions

* Rewrite ClassWriter with Builder pattern and add javadoc support.

* Use setJavadoc instead of accumulating.

* adding cpp jar

* Update .gitignore

Added exception for cpp-build jar

* Add gitignore

* Ignore and remove jar files

* Delete java/lib directory

* Create download-junit-jars.sh

* Update build.xml for downloading junit&mockito jars

* Delete tools/java/java-build/target directory

* Delete tools/java/cpp-build/target directory

Bumps [maven-compiler-plugin](https://github.com/apache/maven-compiler-plugin) from 2.0.2 to 3.11.0.
- [Release notes](https://github.com/apache/maven-compiler-plugin/releases)
- [Commits](https://github.com/apache/maven-compiler-plugin/compare/maven-compiler-plugin-2.0.2...maven-compiler-plugin-3.11.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-compiler-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Bumps [maven-compiler-plugin](https://github.com/apache/maven-compiler-plugin) from 2.0.2 to 3.11.0.
- [Release notes](https://github.com/apache/maven-compiler-plugin/releases)
- [Commits](https://github.com/apache/maven-compiler-plugin/compare/maven-compiler-plugin-2.0.2...maven-compiler-plugin-3.11.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-compiler-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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Bumps [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.23.4 to 3.24.0.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](https://github.com/protocolbuffers/protobuf/compare/v3.23.4...v3.24.0)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Bumps [org.codehaus.mojo:exec-maven-plugin](https://github.com/mojohaus/exec-maven-plugin) from 1.5.0 to 3.1.0.
- [Release notes](https://github.com/mojohaus/exec-maven-plugin/releases)
- [Commits](https://github.com/mojohaus/exec-maven-plugin/compare/exec-maven-plugin-1.5.0...exec-maven-plugin-3.1.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:exec-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Bumps [junit:junit](https://github.com/junit-team/junit4) from 4.13.1 to 4.13.2.
- [Release notes](https://github.com/junit-team/junit4/releases)
- [Changelog](https://github.com/junit-team/junit4/blob/main/doc/ReleaseNotes4.13.1.md)
- [Commits](https://github.com/junit-team/junit4/compare/r4.13.1...r4.13.2)

---
updated-dependencies:
- dependency-name: junit:junit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.21.7 to 3.23.4.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](https://github.com/protocolbuffers/protobuf/compare/v3.21.7...v3.23.4)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: mandlil <138015259+mandlil@users.noreply.github.com>

Bumps org.mortbay.jetty:maven-jetty-plugin from 6.1.10 to 6.1.26.

---
updated-dependencies:
- dependency-name: org.mortbay.jetty:maven-jetty-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Bumps [org.codehaus.mojo:build-helper-maven-plugin](https://github.com/mojohaus/build-helper-maven-plugin) from 1.9.1 to 3.4.0.
- [Release notes](https://github.com/mojohaus/build-helper-maven-plugin/releases)
- [Commits](https://github.com/mojohaus/build-helper-maven-plugin/compare/build-helper-maven-plugin-1.9.1...3.4.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:build-helper-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Bumps [org.apache.maven.plugins:maven-jar-plugin](https://github.com/apache/maven-jar-plugin) from 2.2 to 3.3.0.
- [Release notes](https://github.com/apache/maven-jar-plugin/releases)
- [Commits](https://github.com/apache/maven-jar-plugin/compare/maven-jar-plugin-2.2...maven-jar-plugin-3.3.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-jar-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: mandlil <138015259+mandlil@users.noreply.github.com>