ci: use specific go version with actions/setup-go

Author: buchdag

.github/workflows/tests.yml

@@ -21,6 +21,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+      
+      - uses: actions/setup-go@v2
+        with:
+          go-version: '1.17'
 
       - name: Install dependencies
         run: make get-deps