fix yaml syntax for publish workflow

Author: jacklowrie

.github/workflows/publish.yml

@@ -43,7 +43,8 @@ jobs:
   release-artifacts:
     runs-on: ubuntu-latest
     needs:
-      - [build-package, cross-test]
+      - build-package
+      - cross-test
     permissions:
       - content: write
     steps:
@@ -65,7 +66,8 @@ jobs:
   pypi-publish:
     runs-on: ubuntu-latest
     needs:
-      - [build-package, cross-test]
+      - build-package
+      - cross-test
     permissions:
       id-token: write