Update docker/login-action action to v4 (#1046)

| datasource  | package             | from | to |
| ----------- | ------------------- | ---- | -- |
| github-tags | docker/login-action | v3   | v4 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/docker-openresty.yml

@@ -33,14 +33,14 @@ jobs:
           driver-opts: network=host
 
       - name: DockerHub Login
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
         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: ${{ github.repository_owner }}

.github/workflows/docker.yml

@@ -48,14 +48,14 @@ jobs:
           driver-opts: network=host
 
       - name: DockerHub Login
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
         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: ${{ github.repository_owner }}

.github/workflows/update-docker-images.yml

@@ -102,14 +102,14 @@ jobs:
         if: ${{ matrix.needs-updating == 'true' }}
 
       - name: DockerHub Login
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
         if: ${{ matrix.needs-updating == 'true' }}
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}