fix build args

Author: linalinn

.github/workflows/kicad-nightly.yaml

@@ -39,10 +39,10 @@ jobs:
         with:
           context: .
           file: ./Dockerfile
-          build-args: |
-            KICAD_PPA=kicad-dev-nightly
-            KICAD_PACKAGE=kicad-nightly
-            VERSION=${{ github.sha }}
+          build-args:
+            - "KICAD_PPA=kicad-dev-nightly"
+            - "KICAD_PACKAGE=kicad-nightly"
+            - "VERSION=${{ github.sha }}"
           cache-to: "type=registry,ref=ghcr.io/linalinn/kicad-render:cache-${{ github.ref_name }}"
           cache-from: "type=registry,ref=ghcr.io/linalinn/kicad-render:cache-${{ github.ref_name }}"
           load: true