Fix the update version workflow to not set branch if no update required (#403)

Author: cynthiajoan

.github/workflows/build_starter.yml

@@ -219,7 +219,7 @@ jobs:
     with:
       unity_version: ${{ needs.check_and_prepare.outputs.unity_version }}
       firebase_cpp_sdk_version: ${{ needs.check_and_prepare.outputs.firebase_cpp_sdk_version }}
-      unity_branch: ${{ needs.check_and_prepare.outputs.unity_branch }}
+      unity_branch: ${{ needs.decide_build_branch.outputs.build_branch }}
       apis: ${{ needs.check_and_prepare.outputs.apis }}
       unity_platform_name: macOS,iOS
       additional_cmake_flags: ${{ needs.check_and_prepare.outputs.additional_cmake_flags }}

.github/workflows/update_versions.yml

@@ -48,7 +48,7 @@ jobs:
   update_versions:
     name: update-version
     outputs:
-      new_branch: ${{ steps.name-branch.outputs.new_branch }}
+      new_branch: ${{ steps.decide-output.outputs.new_branch }}
       cpp_release_version: ${{ steps.decide_input.outputs.cpp_release_version }}
     runs-on: ubuntu-latest
     strategy:
@@ -174,3 +174,13 @@ jobs:
             echo "::warning ::No changes detected, won't create pull request."
             echo "::set-output name=branch_pushed::0"
           fi
+
+      - name: Decide output
+        id: decide-output
+        run: |
+          if [[ "${{ steps.push-branch.outputs.branch_pushed }}" == "1" ]]; then
+            # Triggered by callable
+            echo "::set-output name=new_branch::${{ steps.name-branch.outputs.new_branch }}"
+          else
+            echo "::set-output name=new_branch::"
+          fi