chore: fix repo name

Author: mahiarirani

.github/workflows/publish_ghcr.yaml

@@ -47,8 +47,8 @@ jobs:
           push: true
           platforms: linux/amd64,linux/arm64/v8
           tags: |
-            ghcr.io/${{ github.repository_owner }}/etherproxy:${{ env.VERSION }}
-            ghcr.io/${{ github.repository_owner }}/etherproxy:latest
+            ghcr.io/${{ github.repository_owner.toLowerCase() }}/etherproxy:${{ env.VERSION }}
+            ghcr.io/${{ github.repository_owner.toLowerCase() }}/etherproxy:latest
           labels: |
             org.opencontainers.image.version=${{ env.VERSION }}
             org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}