ci: Configure git identity before rebase in push retry

The push-with-retry step calls `git pull --rebase origin main` to
recover from concurrent pushes to `main`. Rebase replays commits and
therefore needs `user.name` / `user.email` in git config. The
`stefanzweifel/git-auto-commit-action` only sets those inline for its
own `git commit` invocation, so the next shell step has no identity
and the rebase aborts with "empty ident name (for <runner@...>) not
allowed".

Persist the identity at the repo level — using the same name and
email already configured on the auto-commit step — before the retry
loop runs. Mirrors the fix landed in
EngineeringKiosk/awesome-software-engineering-games.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: andygrunwald

.github/workflows/podcast-data.yml

@@ -60,6 +60,13 @@ jobs:
           commit_author: "GitHub Actions Bot <actions@github.com>"
           skip_push: true
 
+      - name: Configure git identity for rebase
+        if: steps.auto-commit.outputs.changes_detected == 'true'
+        working-directory: ${{ github.workspace }}
+        run: |
+          git config user.name "GitHub Actions Bot"
+          git config user.email "actions@github.com"
+
       - name: Push changes with retry
         if: steps.auto-commit.outputs.changes_detected == 'true'
         working-directory: ${{ github.workspace }}