ci: upgrade actions (#15114)

This PR upgrades CI actions
[actions/setup-python](https://github.com/actions/setup-python/releases/tag/v5.0.0)
and
[google-github-actions/auth](https://github.com/google-github-actions/auth/releases/tag/v2.0.0)

.github/actions/poetry_setup/action.yml

@@ -26,7 +26,7 @@ inputs:
 runs:
   using: composite
   steps:
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       name: Setup python ${{ inputs.python-version }}
       with:
         python-version: ${{ inputs.python-version }}

.github/workflows/check_diffs.yml

@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/setup-python@v5
         with:
           python-version: '3.10'
       - id: files

.github/workflows/scheduled_test.yml

@@ -36,7 +36,7 @@ jobs:
 
       - name: 'Authenticate to Google Cloud'
         id: 'auth'
-        uses: 'google-github-actions/auth@v1'
+        uses: google-github-actions/auth@v2
         with:
           credentials_json: '${{ secrets.GOOGLE_CREDENTIALS }}'