Bump actions/setup-go from 2 to 6

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 2 to 6.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v2...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] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -4,7 +4,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: setup Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v6
         with:
           go-version: '1.23.8'
 

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
           fetch-depth: 0
 
       - name: setup Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v6
         with:
           go-version: '1.23.8'