Update dependabot.yml to avoid multiple PRs (#3360)

Signed-off-by: Joyce <joycebrum@google.com>
Co-authored-by: Tijana Vislavski Gradina <tijanavg@google.com>

.github/dependabot.yml

@@ -4,78 +4,142 @@ updates:
     directory: /
     schedule:
       interval: monthly
+    groups:
+      github-actions:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /java/carrier
     schedule:
       interval: monthly
+    groups:
+      java-carrier:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /java/demo
     schedule:
       interval: monthly
+    groups:
+      java-demo:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /java/geocoder
     schedule:
       interval: monthly
+    groups:
+      geocoder:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /java/internal/prefixmapper
     schedule:
       interval: monthly
+    groups:
+      prefixmapper:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /java/libphonenumber
     schedule:
       interval: monthly
+    groups:
+      java-libphonenumber:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /java
     schedule:
       interval: monthly
+    groups:
+      java:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /metadata
     schedule:
       interval: monthly
+    groups:
+      metadata:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /migrator/migrator-servlet
     schedule:
       interval: monthly
+    groups:
+      migrator-servlet:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /migrator
     schedule:
       interval: monthly
+    groups:
+      migrator:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /
     schedule:
       interval: monthly
+    groups:
+      root:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /tools/java/common
     schedule:
       interval: monthly
+    groups:
+      tools-java-common:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /tools/java/cpp-build
     schedule:
       interval: monthly
+    groups:
+      tools-java-cpp-build:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /tools/java/data
     schedule:
       interval: monthly
+    groups:
+      tools-java-data:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /tools/java/java-build
     schedule:
       interval: monthly
+    groups:
+      java-build:
+        patterns:
+          - "*"
 
   - package-ecosystem: maven
     directory: /tools/java
     schedule:
       interval: monthly
+    groups:
+      tools-java:
+        patterns:
+          - "*"