ci(action): update docker/login-action action to v4

Author: descope[bot]

.github/workflows/ci.yml

@@ -112,7 +112,7 @@ jobs:
           echo "dockerfile=vendor/github.com/descope/common/build/docker/service/Dockerfile" >> "${GITHUB_OUTPUT}"
 
       - name: Login to Docker Hub
-        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3.7.0
+        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4.0.0
         with:
           registry: docker.io
           username: ${{ secrets.DOCKERHUB_USERNAME }}