build(deps): Bump docker/build-push-action from 3 to 4

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 3 to 4.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v3...v4)

---
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>

.github/workflows/deploydocker.yml

@@ -64,7 +64,7 @@ jobs:
 
       - name: Build and push
         id: docker_build
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           context: .
           file: ./docker/server/Dockerfile
@@ -132,7 +132,7 @@ jobs:
 
       - name: Build and push
         id: docker_build
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           context: .
           file: ./docker/proxy/Dockerfile

.github/workflows/docker-janus.yml

@@ -26,6 +26,6 @@ jobs:
         uses: docker/setup-buildx-action@v2
 
       - name: Build Docker image
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           context: docker/janus

.github/workflows/docker.yml

@@ -23,7 +23,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
 
       - name: Build Docker image
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           context: .
           file: docker/server/Dockerfile
@@ -42,7 +42,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
 
       - name: Build Docker image
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v4
         with:
           context: .
           file: docker/proxy/Dockerfile