Fix fap build action (#36)

Author: 0xchocolate

.github/workflows/build.yml

@@ -36,7 +36,7 @@ jobs:
           sdk-channel: ${{ matrix.sdk-channel }}
           sdk-index-url: ${{ matrix.sdk-index-url }}
       - name: Upload app artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.event.repository.name }}-${{ steps.build-app.outputs.suffix }}
-          path: ${{ steps.build-app.outputs.fap-artifacts }}
+          path: ${{ steps.build-app.outputs.fap-artifacts }}