Changed secret to use the PAT of the bot (google-gemini#359)

Author: IvanLH

.github/workflows/create-release-pr.yml

@@ -47,4 +47,4 @@ jobs:
         with:
           setupGitUser: false
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GENAI_SDK_BOT_PAT }}