Actions: align google-github-actions/auth versions

(cherry picked from commit 0b2d4d7)

Author: michaelklishin

.github/workflows/templates/test-mixed-versions.template.yaml

@@ -96,7 +96,7 @@ jobs:
           https://builds.hex.pm
           https://cdn.jsdelivr.net/hex
     - name: AUTHENTICATE TO GOOGLE CLOUD
-      uses: google-github-actions/[email protected].5
+      uses: google-github-actions/[email protected].6
       with:
         credentials_json: ${{ secrets.REMOTE_CACHE_CREDENTIALS_JSON }}
     - name: BUILD SECONDARY UMBRELLA ARCHIVE

.github/workflows/templates/test.template.yaml

@@ -73,7 +73,7 @@ jobs:
       run: |
         echo "value=bazel-repo-cache-${{ hashFiles('MODULE.bazel') }}" | tee -a $GITHUB_OUTPUT
     - name: AUTHENTICATE TO GOOGLE CLOUD
-      uses: google-github-actions/[email protected].5
+      uses: google-github-actions/[email protected].6
       with:
         credentials_json: ${{ secrets.REMOTE_CACHE_CREDENTIALS_JSON }}
     - name: REPO CACHE