Bump actions/setup-go from 4 to 5

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 4 to 5.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v4...v5)

---
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>

.github/workflows/ci.yaml

@@ -25,7 +25,7 @@ jobs:
         with:
           fetch-depth: 1
       - name: Install go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           cache: true
       - name: Execute tests

.github/workflows/conformance.yaml

@@ -27,7 +27,7 @@ jobs:
         with:
           fetch-depth: 1
       - name: Install go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
           go-version: ${{ matrix.go-version }}
           cache: true