Re-order code checkout

.github/workflows/tests.yml

@@ -24,15 +24,15 @@ jobs:
         sudo curl -o /usr/local/bin/swagger -L'#' https://github.com/go-swagger/go-swagger/releases/download/v0.23.0/swagger_linux_amd64
         sudo chmod +x /usr/local/bin/swagger
 
+    - name: Check out repo
+      uses: actions/checkout@v2
+
     - name: Install protoc and check no difference
       run: |
         sudo apt install protobuf-compiler
         make gen
         git update-index --refresh
         git diff-index --quiet HEAD --
-      
-    - name: Check out repo
-      uses: actions/checkout@v2
 
     - name: Run golangci-lint
       uses: actions-contrib/golangci-lint@v1