deps: Update [email protected] (#359)

Reference: https://github.com/protocolbuffers/protobuf/releases

No observable changes to update it to latest.

Author: bflad

.github/workflows/ci-protobuf.yml

@@ -29,7 +29,7 @@ jobs:
           # pinned here to prevent unexpected differences. Follow the
           # https://github.com/protocolbuffers/protobuf repository for protoc
           # release updates.
-          version: '23.2'
+          version: '25.1'
       - run: go mod download
       - run: make tools
       - run: make protoc