build(deps): 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/preview.yaml

@@ -30,7 +30,7 @@ jobs:
       - name: Available platforms
         run: echo ${{ steps.buildx.outputs.platforms }}
 
-      - uses: docker/login-action@v3
+      - uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: traptitech

.github/workflows/release-helm.yaml

@@ -74,7 +74,7 @@ jobs:
           git commit -m "Update charts/${{ inputs.chart }} to ${{ steps.calc-tag.outputs.new-raw }}"
           git push
 
-      - uses: docker/login-action@v3
+      - uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ env.REGISTRY_USER }}

.github/workflows/release.yaml

@@ -53,7 +53,7 @@ jobs:
       - name: Available platforms
         run: echo ${{ steps.buildx.outputs.platforms }}
 
-      - uses: docker/login-action@v3
+      - uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ env.REGISTRY_USER }}