ci(actions): upgrade GitHub Actions to latest versions

- bump actions/checkout to v6
- bump actions/setup-go to v6
- bump actions/cache to v5
- bump goreleaser/goreleaser-action to v7
- bump golangci/golangci-lint-action to v9
- bump github/codeql-action/* to v4
- bump codecov/codecov-action to v5
- bump docker/build-push-action to v7
- bump docker/login-action to v4
- bump docker/metadata-action to v6
- bump docker/setup-buildx-action to v4
- bump docker/setup-qemu-action to v4
- bump hadolint/hadolint-action to v3.3.0
- bump aquasecurity/trivy-action to v0.35.0

.github/workflows/testing.yml

@@ -9,21 +9,21 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           go-version-file: go.mod
           check-latest: true
 
       - name: Setup golangci-lint
-        uses: golangci/golangci-lint-action@v7
+        uses: golangci/golangci-lint-action@v9
         with:
           version: latest
           args: --verbose
 
-      - uses: hadolint/hadolint-action@v3.1.0
+      - uses: hadolint/hadolint-action@v3.3.0
         name: hadolint for Dockerfile
         with:
           dockerfile: docker/Dockerfile
@@ -38,7 +38,7 @@ jobs:
       options: --sysctl net.ipv6.conf.all.disable_ipv6=0
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: setup sshd server
         run: |