build(deps): bump docker/bake-action from 5 to 6

Bumps [docker/bake-action](https://github.com/docker/bake-action) from 5 to 6.
- [Release notes](https://github.com/docker/bake-action/releases)
- [Commits](https://github.com/docker/bake-action/compare/v5...v6)

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

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

.github/workflows/e2e.yml

@@ -244,7 +244,7 @@ jobs:
           buildkitd-flags: --debug
       -
         name: Build
-        uses: docker/bake-action@v5
+        uses: docker/bake-action@v6
         with:
           source: ${{ matrix.source }}
           targets: ${{ matrix.targets }}