Bump docker/login-action from 3 to 4

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

---
updated-dependencies:
- dependency-name: docker/login-action
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/container_app_pr.yml

@@ -35,7 +35,7 @@ jobs:
 
             # Note: Accessing, pushing tags etc. to GHCR will only succeed in upstream because secrets.
             - name: Login to Github Container Registry
-              uses: docker/login-action@v3
+              uses: docker/login-action@v4
               with:
                   registry: ghcr.io
                   username: ${{ secrets.GHCR_USERNAME }}

.github/workflows/container_app_push.yml

@@ -101,13 +101,13 @@ jobs:
             # Depending on context, we push to different targets. Login accordingly.
             - if: github.event_name != 'pull_request'
               name: Log in to Docker Hub registry
-              uses: docker/login-action@v3
+              uses: docker/login-action@v4
               with:
                   username: ${{ secrets.DOCKERHUB_USERNAME }}
                   password: ${{ secrets.DOCKERHUB_TOKEN }}
             - if: ${{ github.event_name == 'pull_request' }}
               name: Login to Github Container Registry
-              uses: docker/login-action@v3
+              uses: docker/login-action@v4
               with:
                   registry: ghcr.io
                   username: ${{ secrets.GHCR_USERNAME }}

.github/workflows/container_base_push.yml

@@ -42,7 +42,7 @@ jobs:
             # Note: Accessing, pushing tags etc. to DockerHub will only succeed in upstream and
             #       on events in context of upstream because secrets. PRs run in context of forks by default!
             - name: Log in to the Container registry
-              uses: docker/login-action@v3
+              uses: docker/login-action@v4
               with:
                   username: ${{ secrets.DOCKERHUB_USERNAME }}
                   password: ${{ secrets.DOCKERHUB_TOKEN }}

.github/workflows/container_maintenance.yml

@@ -79,7 +79,7 @@ jobs:
       # Note: Accessing, pushing tags etc. to DockerHub will only succeed in upstream and
       #       on events in context of upstream because secrets. PRs run in context of forks by default!
       - name: Log in to the Container registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
@@ -122,7 +122,7 @@ jobs:
       # Note: Accessing, pushing tags etc. to DockerHub will only succeed in upstream and
       #       on events in context of upstream because secrets. PRs run in context of forks by default!
       - name: Log in to the Container registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
@@ -164,7 +164,7 @@ jobs:
       # Note: Accessing, pushing tags etc. to DockerHub will only succeed in upstream and
       #       on events in context of upstream because secrets. PRs run in context of forks by default!
       - name: Log in to the Container registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}