[CI] Change the deprecated metadata action to a supported one

Author: Miku Laitinen

.github/workflows/dockerhub.yml

@@ -20,7 +20,7 @@ jobs:
 
       - name: Get Docker tags for Debian based image
         id: docker_meta_debian
-        uses: crazy-max/ghaction-docker-meta@v2
+        uses: docker/metadata-action@v5
         with:
           images: |
             mikula/letsproxy
@@ -64,7 +64,7 @@ jobs:
 
       - name: Get Docker tags for Alpine based image
         id: docker_meta_alpine
-        uses: crazy-max/ghaction-docker-meta@v2
+        uses: docker/metadata-action@v5
         with:
           images: |
             mikula/letsproxy