Bump the github-actions group across 1 directory with 3 updates

Bumps the github-actions group with 3 updates in the / directory: [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action), [docker/login-action](https://github.com/docker/login-action) and [docker/build-push-action](https://github.com/docker/build-push-action).


Updates `docker/setup-buildx-action` from 3.12.0 to 4.0.0
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@8d2750c...4d04d5d)

Updates `docker/login-action` from 3.7.0 to 4.1.0
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](docker/login-action@c94ce9f...4907a6d)

Updates `docker/build-push-action` from 5.4.0 to 7.1.0
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@ca052bb...bcafcac)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: 7.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: docker/login-action
  dependency-version: 4.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: docker/setup-buildx-action
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/http-echo-image.yml

@@ -23,17 +23,17 @@ jobs:
           persist-credentials: false
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
 
       - name: Log in to GHCR
-        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3
+        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4.1.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push
-        uses: docker/build-push-action@ca052bb54ab0790a636c9b5f226502c73d547a25 # v5
+        uses: docker/build-push-action@bcafcacb16a39f128d818304e6c9c0c18556b85f # v7.1.0
         with:
           context: ./cmd/http-echo
           push: true