build(deps): bump docker/bake-action from 6 to 7

Bumps [docker/bake-action](https://github.com/docker/bake-action) from 6 to 7.
- [Release notes](https://github.com/docker/bake-action/releases)
- [Commits](https://github.com/docker/bake-action/compare/v6...v7)

---
updated-dependencies:
- dependency-name: docker/bake-action
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/build.yml

@@ -24,7 +24,7 @@ jobs:
     steps:
       -
         name: Build
-        uses: docker/bake-action@v6
+        uses: docker/bake-action@v7
         with:
           targets: build
         env:

.github/workflows/test.yml

@@ -36,7 +36,7 @@ jobs:
         uses: actions/checkout@v6
       -
         name: Test
-        uses: docker/bake-action@v6
+        uses: docker/bake-action@v7
         with:
           source: .
           targets: test-coverage

.github/workflows/validate.yml

@@ -25,7 +25,7 @@ jobs:
       -
         name: List targets
         id: generate
-        uses: docker/bake-action/subaction/list-targets@v6
+        uses: docker/bake-action/subaction/list-targets@v7
         with:
           target: validate
 
@@ -40,6 +40,6 @@ jobs:
     steps:
       -
         name: Validate
-        uses: docker/bake-action@v6
+        uses: docker/bake-action@v7
         with:
           targets: ${{ matrix.target }}