Update GitHub actions

Author: TheAssassin

.github/workflows/main.yml

@@ -21,15 +21,15 @@ jobs:
       ARCH: ${{ matrix.ARCH }}
       APPIMAGE_EXTRACT_AND_RUN: 1
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
       - name: Set up QEMU integration for Docker
         run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
       - name: Run build in Docker
         run: bash -euxo pipefail ci/build-in-docker.sh
       - name: Archive artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: AppImage ${{ matrix.ARCH }}
           path: linuxdeploy-plugin-appimage*.AppImage*
@@ -41,7 +41,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v4
       - name: Inspect directory after downloading artifacts
         run: ls -alFR
       - name: Create release and upload artifacts