Up go version for tests

.github/workflows/go.yml

@@ -12,18 +12,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-    - name: Set up Go 1.12
-      uses: actions/setup-go@v1
+    - name: Set up Go 1.13
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.12
+        go-version: 1.13
       id: go
 
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v1
-
-    - name: Get dependencies
-      run: |
-        go get -v -t -d ./...
+      uses: actions/checkout@v3
 
     - name: Test
       run: go test -v