chore(deps): bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/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)

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

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

.github/workflows/docker-build.yml

@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -108,7 +108,7 @@ jobs:
           sarif_file: ${{ steps.scan.outputs.sarif }}
 
       - name: Checkout Repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Changelog
         uses: TriPSs/conventional-changelog-action@v6

Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:13.2 AS stage
+FROM debian:13.1 AS stage
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 ENV DEBIAN_FRONTEND=noninteractive
 ARG PACKAGE_BASEURL=https://download.zerotier.com/debian/trixie/pool/main/z/zerotier-one
@@ -19,7 +19,7 @@ RUN set -e; \
     echo "Downloading ZeroTier: arch=$ARCH_MAPPING version=$VERSION"; \
     curl -fsSL -o zerotier-one.deb "${PACKAGE_BASEURL}/zerotier-one_${VERSION}_${ARCH_MAPPING}.deb"
 
-FROM debian:13.2
+FROM debian:13.1
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 ENV DEBIAN_FRONTEND=noninteractive
 ARG VERSION