Only Firebase SDKs

Author: emilypgoogle

.github/workflows/diff-javadoc.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Changed Modules
         id: changed-modules
         run: |
-          git diff --name-only HEAD~1 | xargs printf -- '--changed-git-paths %s\n' | xargs ./gradlew writeChangedProjects --output-file-path=modules.json
+          git diff --name-only HEAD~1 | xargs printf -- '--changed-git-paths %s\n' | xargs ./gradlew writeChangedProjects --output-file-path=modules.json --only-firebase-sdks
           echo "run=$(cat modules.json | sed "s/[]\"[]//g" | sed "s/,/\n/g" | xargs printf -- "%s:kotlinDoc ")" >> $GITHUB_OUTPUT
 
       - name: Build