progress_bot: use gcloud auth action (#44088)

* try new version of action

* git config

* git config in the docker image

* testing git config in image

* add comment

* new tag

* auth with gcloud action

* remove envvar

.github/workflows/progress.yml

@@ -22,17 +22,20 @@ jobs:
     runs-on: ubuntu-latest
     name: Report the last 24h of CHANGELOG to the progress channel
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           fetch-depth: 1000
-      - name: Set up GCP key
-        run: |
-          echo ${{ secrets.PROGRESS_BOT_GCP_ACCOUNT_KEY }} | base64 -d > progress-bot-credentials.json
+
+      - name: Configure gcloud
+        uses: google-github-actions/auth@v0
+        with:
+          credentials_json: ${{ secrets.PROGRESS_BOT_GCP_ACCOUNT_KEY }}
+          service_account: 'progress-bot@sourcegraph-dev.iam.gserviceaccount.com'
+
       - name: Report to Slack
-        uses: docker://sourcegraph/progress-bot:latest@sha256:93ceab2a92d8464eccf367d47e8d585307d7ff36ab57e0240c3d68b4349c4e57
+        uses: docker://sourcegraph/progress-bot:latest@sha256:adbce46dde34527bcb27027a552c76cc0622683297dd935111fe6e1067c53efa
         env:
           SINCE: ${{ github.event.inputs.since || '24h' }}
           DRY: ${{ github.event.inputs.dry || 'false' }}
           CHANNEL: ${{ github.event.inputs.channel || 'progress' }}
-          GOOGLE_APPLICATION_CREDENTIALS: progress-bot-credentials.json
           SLACK_API_TOKEN: ${{ secrets.PROGRESS_BOT_SLACK_API_TOKEN }}

internal/cmd/progress-bot/run.sh

@@ -2,5 +2,9 @@
 
 set -euo pipefail
 
+# Required to stop .git ownership error
+# https://github.com/actions/runner/issues/2033
+git config --global --add safe.directory /github/workspace
+
 git blame -w --line-porcelain -- CHANGELOG.md |
   progress-bot -since="$SINCE" -dry="$DRY" -channel="$CHANNEL"