Bump actions/setup-go from 5 to 6

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 5 to 6.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](https://github.com/actions/setup-go/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/build.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v5
 
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go }}
 
@@ -40,7 +40,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - name: Set up Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go }}
           cache: false

.github/workflows/release.yml

@@ -53,7 +53,7 @@ jobs:
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
       - name: "Install packagecloud gem"
         run: gem install package_cloud
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version: 'stable'
           cache: true