Updated grpc tooling version used in build and CI

Author: cmaglie

.github/workflows/check-protobuf-task.yml

@@ -61,12 +61,12 @@ jobs:
       - name: Install protoc compiler
         uses: arduino/setup-protoc@v3
         with:
-          version: v24.3
+          version: v26.1
           repo-token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Install Go deps
         run: |
-          go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.31.0
+          go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.34.1
           go install google.golang.org/grpc/cmd/[email protected]
 
       - name: Install Task

docs/CONTRIBUTING.md

@@ -80,9 +80,9 @@ If you want to run integration tests you will also need:
 If you're working on the gRPC interface you will also have to:
 
 - download and install the [protoc][6] compiler (use the version required to match the generated code, please note that
-  the latest releases does not follow semantic versioning anymore so, for example, the version 4.24.3 must be searched
-  as 24.3 dropping the major number)
-- install `protoc-gen-go` using: `go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.31.0` (use the version
+  the latest releases does not follow semantic versioning anymore so, for example, the version 5.26.1 must be searched
+  as 26.1 dropping the major number)
+- install `protoc-gen-go` using: `go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.34.1` (use the version
   required to match the generated code)
 - install `protoc-gen-go-grpc` using: `go install google.golang.org/grpc/cmd/[email protected]` (use the version
   required to match the generated code)