Bump actions/setup-go from 2 to 4 (#198)

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 2 to 4.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v2...v4)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/tests.yml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
     - name: Set up Go 1.x
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v4
       with:
         go-version: ${{ matrix.go }}
 
@@ -62,7 +62,7 @@ jobs:
 
     steps:
     - name: Set up Go 1.x
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v4
       with:
         go-version: ${{ matrix.go }}
 
@@ -106,7 +106,7 @@ jobs:
 
     steps:
     - name: Set up Go 1.x
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v4
       with:
         go-version: ${{ matrix.go }}
 
@@ -149,7 +149,7 @@ jobs:
 
     steps:
     - name: Set up Go 1.x
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v4
       with:
         go-version: ${{ matrix.go }}