chore(deps): update workflow action versions

- actions/checkout: v4/v5 → v6
- actions/setup-go: v5 → v6
- docker/build-push-action: v5 → v6

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/release-nightly.yml

@@ -17,10 +17,10 @@ jobs:
   goreleaser:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version-file: "go.mod"
       - name: goreleaser
@@ -52,7 +52,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # all history for all branches and tags
 

.gitea/workflows/release-tag.yml

@@ -9,10 +9,10 @@ jobs:
   goreleaser:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0 # all history for all branches and tags
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version-file: "go.mod"
       - name: Import GPG key
@@ -46,7 +46,7 @@ jobs:
       DOCKER_LATEST: latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # all history for all branches and tags
 
@@ -69,7 +69,7 @@ jobs:
           echo REPO_VERSION=${GITHUB_REF_NAME#v} >> $GITHUB_OUTPUT
 
       - name: Build and push
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile
@@ -83,7 +83,7 @@ jobs:
             ${{ env.DOCKER_ORG }}/${{ steps.meta.outputs.REPO_NAME }}:${{ env.DOCKER_LATEST }}
 
       - name: Build and push dind
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile
@@ -97,7 +97,7 @@ jobs:
             ${{ env.DOCKER_ORG }}/${{ steps.meta.outputs.REPO_NAME }}:${{ env.DOCKER_LATEST }}-dind
 
       - name: Build and push dind-rootless
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile

.gitea/workflows/test.yml

@@ -8,8 +8,8 @@ jobs:
     name: check and test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - uses: actions/checkout@v6
+      - uses: actions/setup-go@v6
         with:
           go-version-file: 'go.mod'
       - name: vet checks