Bump commons-fileupload from 1.4 to 1.5 in /migrator/migrator-servlet (#2892)

Bumps commons-fileupload from 1.4 to 1.5.

---
updated-dependencies:
- dependency-name: commons-fileupload:commons-fileupload
  dependency-type: direct:production
...

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migrator/migrator-servlet/pom.xml

@@ -54,7 +54,7 @@
       <dependency>
           <groupId>commons-fileupload</groupId>
           <artifactId>commons-fileupload</artifactId>
-          <version>1.4</version>
+          <version>1.5</version>
           <scope>compile</scope>
       </dependency>
   </dependencies>