Bump actions/setup-go from 3 to 5 (#17)

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 3 to 5.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v3...v5)

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

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

.github/workflows/validations.yaml

@@ -16,7 +16,7 @@ jobs:
     name: "Static analysis"
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v5
         with:
           go-version: ${{ env.GO_VERSION }}
 
@@ -49,7 +49,7 @@ jobs:
     name: "Unit tests"
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/setup-go@v3
+      - uses: actions/setup-go@v5
         with:
           go-version: ${{ env.GO_VERSION }}