.github: Bump peter-evans/create-pull-request from 7.0.1 to 7.0.3 (#117)

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 7.0.1 to 7.0.3.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@v7.0.1...v7.0.3)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/buf-update.yaml

@@ -19,7 +19,7 @@ jobs:
  make install-tools proto-update
 
  - name: Create pull request
- uses: peter-evans/create-pull-request@v7.0.1
+ uses: peter-evans/create-pull-request@v7.0.3
  with:
  title: Update Buf dependencies
  body: Automatic pull request for updating Buf dependencies