code quality check: set go version to 1.14

.github/workflows/quality.yml

@@ -15,7 +15,7 @@ jobs:
     - name: Set up Go 1.14
       uses: actions/setup-go@v2
       with:
-        go-version: 1.14.x
+        go-version: '1.14'
       id: go
 
     - name: Check out code into the Go module directory