update github actions

Author: septs

.github/workflows/polyfill.yml

@@ -8,7 +8,7 @@ on:
 
 defaults:
   run:
-    working-directory: packages/polyfill
+    working-directory: ./packages/polyfill
 
 jobs:
   build:
@@ -28,4 +28,4 @@ jobs:
       - name: Lint
         run: npm run lint
       - name: Publish to GitHub Package (unstable)
-        run: scripts/publish-to-github.sh
+        run: ./scripts/publish-to-github.sh