Update upload-artifact to v4

Author: bitcryptic-gw

.github/workflows/package.yml

@@ -9,13 +9,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Zip plugin
         run: zip -r proxy-aware-https-fix.zip proxy-aware-https-fix.php README.md LICENSE CHANGELOG.md
 
       - name: Upload artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: proxy-aware-https-fix
           path: proxy-aware-https-fix.zip