build(deps): bump the actions group with 3 updates

Bumps the actions group with 3 updates: [actions/checkout](https://github.com/actions/checkout), [actions/setup-go](https://github.com/actions/setup-go) and [golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action).


Updates `actions/checkout` from 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v5...v6)

Updates `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)

Updates `golangci/golangci-lint-action` from 8 to 9
- [Release notes](https://github.com/golangci/golangci-lint-action/releases)
- [Commits](https://github.com/golangci/golangci-lint-action/compare/v8...v9)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: actions/setup-go
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: golangci/golangci-lint-action
  dependency-version: '9'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

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

.github/workflows/go.yml

@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: ${{ matrix.go-version }}
     - name: Check out repository
@@ -52,7 +52,7 @@ jobs:
         fi
         echo "All Go files are correctly formatted."
     - name: Run linter
-      uses: golangci/golangci-lint-action@v8
+      uses: golangci/golangci-lint-action@v9
       with:
         version: v2.6.2
   regenerate:
@@ -62,7 +62,7 @@ jobs:
     - name: Check out repository
       uses: actions/checkout@v6
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: 1.25.x
     - name: Install schematyper

.github/workflows/ignition-validate.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - name: Set up Go 1.x
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@v6
       with:
         go-version: ${{ matrix.go-version }}
     - name: Check out repository

.github/workflows/tmt-tests.yml

@@ -33,7 +33,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - uses: actions/setup-go@v6
         with: