build(deps): bump peter-evans/create-pull-request from 7 to 8 (#20365)

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 7 to 8.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](https://github.com/peter-evans/create-pull-request/compare/v7...v8)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/update-mozilla-ca-cert.yaml

@@ -32,7 +32,7 @@ jobs:
           passphrase: ${{ secrets.CHIA_AUTOMATION_PRIVATE_GPG_PASSPHRASE }}
 
       - name: Create Pull Request if cacert.pem changed
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@v8
         with:
           base: main
           commit-message: "Update cacert.pem from Mozilla CA bundle"