go version changed to 1.16.2 in CI workflow

Author: enverbisevac

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: Go
+name: CI workflow
 
 on:
   push:
@@ -16,7 +16,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.15
+        go-version: 1.16.2
 
     - name: Check
       run: make check