Update git identity from typescript-bot to typescript-automation[bot] (#3584)

Author: jakebailey

.github/workflows/keepalive.yml

@@ -15,8 +15,8 @@ jobs:
       - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
       - run: |
           if [[ $(git log --format="%H" --since "50 days" | head -c1 | wc -c) == 0 ]]; then
-            git config user.email "typescriptbot@microsoft.com"
-            git config user.name "TypeScript Bot"
+            git config user.email "290192711+typescript-automation[bot]@users.noreply.github.com"
+            git config user.name "typescript-automation[bot]"
             git commit --allow-empty -m "Automated commit to keep GitHub Actions active"
             git push
           fi