github: check if the checked in go proto code is up to date

Author: draganm

.github/workflows/run-tests.yml

@@ -24,6 +24,12 @@ jobs:
       - name: "Setup env"
         uses: JRMurr/direnv-nix-action@v4.1.0
 
+      - name: Check if the current protobuf go files are up to date
+        working-directory: protocol
+        run: |
+          make
+          git diff --exit-code
+
       - name: Use Latest userwireguard
         run: |
           go mod edit -dropreplace github.com/urnetwork/userwireguard@v0.0.0