Bump actions/setup-go from v2.1.2 to v2.1.3

Bumps [actions/setup-go](https://github.com/actions/setup-go) from v2.1.2 to v2.1.3.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](https://github.com/actions/setup-go/compare/v2.1.2...37335c7bb261b353407cff977110895fa0b4f7d8)

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/acctest.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
 
     - name: Set up Go
-      uses: actions/setup-go@v2.1.2
+      uses: actions/setup-go@v2.1.3
       with:
         go-version: '1.15'
       id: go
@@ -51,7 +51,7 @@ jobs:
     steps:
 
     - name: Set up Go
-      uses: actions/setup-go@v2.1.2
+      uses: actions/setup-go@v2.1.3
       with:
         go-version: '1.15'
       id: go