This PR migrates all GitHub workflow configurations from the opentelemetrybot user account to the otelbot GitHub app as requested in the issue.

Changes Made

1. Token Migration

• Replaced all instances of ${{ secrets.OPENTELEMETRYBOT_GITHUB_TOKEN }} with ${{ steps.otelbot-token.outputs.token }}
• Added the otelbot token generation step directly before each step that uses it:

  - uses: actions/create-github-app-token@df432ceedc7162793a195dd1713ff69aefc7379e # v2.0.6
    id: otelbot-token
    with:
      app-id: ${{ vars.OTELBOT_APP_ID }}
      private-key: ${{ secrets.OTELBOT_PRIVATE_KEY }}

2. Git Configuration Update

Updated .github/scripts/use-cla-approved-github-bot.sh:

git config user.name otelbot
git config user.email 197425009+otelbot@users.noreply.github.com

3. User Login Checks

Updated all conditional logic from opentelemetrybot to otelbot[bot] (with the [bot] suffix since otelbot is a GitHub app):

• github.event.pull_request.user.login != 'otelbot[bot]'
• github.actor != 'otelbot[bot]'

4. Branch Name Updates

Updated branch prefixes from opentelemetrybot/ to otelbot/:

• otelbot/prepare-release-${VERSION}
• otelbot/update-version-to-${VERSION}
• otelbot/backport-${NUMBER}-to-${BRANCH}

Files Modified

• .github/workflows/prepare-release-branch.yml
• .github/workflows/backport.yml
• .github/workflows/prepare-patch-release.yml
• .github/workflows/check-links.yml
• .github/workflows/changelog.yml
• .github/workflows/templates/misc.yml.j2
• .github/workflows/misc_0.yml (regenerated from template)
• .github/scripts/use-cla-approved-github-bot.sh

The changes maintain all existing functionality while properly migrating to the new GitHub app authentication system.

Fixes #26.

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