github: Use v4 upload-artifact

Author: bummoblizard

.github/workflows/build.yml

@@ -42,7 +42,7 @@ jobs:
           XCODE_PATH: "/Applications/Xcode_15.4.app"
 
       - name: Upload Artifact
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ipa-build
           path: Code.ipa