ci: remove GitHub Actions cache configuration from Docker build steps

.gitea/workflows/ci.yml

@@ -85,8 +85,6 @@ jobs:
           push: true
           tags: ${{ steps.meta-playout.outputs.tags }}
           labels: ${{ steps.meta-playout.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
 
       - name: Extract metadata for Chat
         id: meta-chat
@@ -107,8 +105,6 @@ jobs:
           push: true
           tags: ${{ steps.meta-chat.outputs.tags }}
           labels: ${{ steps.meta-chat.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
 
       - name: Extract metadata for Nginx
         id: meta-nginx
@@ -130,8 +126,6 @@ jobs:
           push: true
           tags: ${{ steps.meta-nginx.outputs.tags }}
           labels: ${{ steps.meta-nginx.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
 
   release:
     needs: docker