fix(pipeline): Update push secrets, remove frontend caching

.gitea/workflows/backend.yaml

@@ -81,7 +81,7 @@ jobs:
         with:
           registry: gitea.lugnas.de
           username: ${{ gitea.actor }}
-          password: ${{ gitea.token }}
+          password: ${{ secrets.DOCKER_PUSH_TOKEN }}
 
       - name: Extract metadata for Docker
         id: meta

.gitea/workflows/frontend.yaml

@@ -75,7 +75,7 @@ jobs:
         with:
           registry: gitea.lugnas.de
           username: ${{ gitea.actor }}
-          password: ${{ gitea.token }}
+          password: ${{ secrets.DOCKER_PUSH_TOKEN }}
 
       - name: Extract metadata for Docker
         id: meta
@@ -93,8 +93,6 @@ jobs:
           push: ${{ gitea.event_name == 'push' && gitea.ref == 'refs/heads/main' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
 
       - name: Image built successfully
         if: gitea.event_name == 'push' && gitea.ref == 'refs/heads/main'