github-actions(deps): bump actions/setup-go from 2 to 4

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] <[email protected]>

Author: dependabot[bot]

.github/workflows/tests_go.yml

@@ -8,7 +8,7 @@ jobs:
         go-version: [1.15.x]
     steps:
       - name: Install Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v4
         with:
           go-version: ${{ matrix.go-version }}
       - name: Checkout code