Bump docker/login-action from 3 to 4 (#16)

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
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/cron.yml

@@ -71,7 +71,7 @@ jobs:
         id: buildx
         uses: docker/setup-buildx-action@v4
       - name: 'Login to container registry'
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ${{ vars.REGISTRY_SERVER }}
           username: ${{ vars.REGISTRY_USERNAME }}

.github/workflows/pythonkafkaclient.yml

@@ -64,7 +64,7 @@ jobs:
         id: buildx
         uses: docker/setup-buildx-action@v4
       - name: 'Login to container registry'
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ${{ vars.REGISTRY_SERVER }}
           username: ${{ vars.REGISTRY_USERNAME }}