.github: bump peter-evans/create-pull-request from 7.0.5 to 7.0.6 (#2048)

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 7.0.5 to 7.0.6.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@v7.0.5...v7.0.6)

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

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

Author: dependabot[bot]

.github/workflows/buf-update.yaml

@@ -19,7 +19,7 @@ jobs:
           make install-tools proto-update
 
       - name: Create pull request
-        uses: peter-evans/[email protected].5
+        uses: peter-evans/[email protected].6
         with:
           title: Update Buf dependencies
           body: Automatic pull request for updating Buf dependencies