build(deps): bump the updates group with 2 updates

Bumps the updates group with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [docker/build-push-action](https://github.com/docker/build-push-action).


Updates `actions/checkout` from 4.1.7 to 4.2.0
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4.1.7...v4.2.0)

Updates `docker/build-push-action` from 6.7.0 to 6.8.0
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v6.7.0...v6.8.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: updates
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: updates
...

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

Author: dependabot[bot]

.github/workflows/build-multiarch.yml

@@ -98,7 +98,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.7
+        uses: actions/checkout@v4.2.0
         with:
           # for build-files step
           fetch-depth: 0
@@ -139,7 +139,7 @@ jobs:
         uses: docker/setup-qemu-action@v3.2.0
 
       - name: Build for test
-        uses: docker/build-push-action@v6.7.0
+        uses: docker/build-push-action@v6.8.0
         with:
           platforms: linux/amd64
           tags: ${{ env.IMAGE_TO_TEST }}
@@ -177,7 +177,7 @@ jobs:
           password: ${{ github.token }}
 
       - name: Build and push
-        uses: docker/build-push-action@v6.7.0
+        uses: docker/build-push-action@v6.8.0
         if: github.actor == github.repository_owner
         with:
           platforms: ${{ matrix.platforms }}

.github/workflows/verify-pr.yml

@@ -47,7 +47,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.7
+        uses: actions/checkout@v4.2.0
         with:
           # for build-files step
           fetch-depth: 0
@@ -56,7 +56,7 @@ jobs:
         uses: docker/setup-buildx-action@v3.6.1
 
       - name: Confirm multi-arch build
-        uses: docker/build-push-action@v6.7.0
+        uses: docker/build-push-action@v6.8.0
         with:
           platforms: ${{ matrix.platforms }}
           # ensure latest base image is used
@@ -66,7 +66,7 @@ jobs:
           cache-from: type=gha,scope=${{ matrix.variant }}
 
       - name: Build for test
-        uses: docker/build-push-action@v6.7.0
+        uses: docker/build-push-action@v6.8.0
         with:
           # Only build single platform since loading multi-arch image into daemon fails with
           # "docker exporter does not currently support exporting manifest lists"