chore(deps): bump docker/build-push-action from 4 to 5 (#2118)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4 to 5.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v4...v5)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/docker_build_kanidm.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Build kanidm
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           platforms: "linux/amd64"
           tags: ghcr.io/${{ github.repository_owner }}/kanidm:devel

.github/workflows/docker_build_kanidmd.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Build kanidmd
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           platforms: "linux/amd64"
           tags: ghcr.io/${{ github.repository_owner }}/kanidmd:devel

.github/workflows/docker_build_radiusd.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Build radius
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           platforms: linux/arm64,linux/amd64
           tags: ghcr.io/${{ github.repository_owner }}/radius:devel