Update actions/upload-artifact action to v5

Author: renovate[bot]

.github/workflows/nightly.yml

@@ -32,7 +32,7 @@ jobs:
         run: chmod +x ./*-appimage.sh && ./*-appimage.sh
 
       - name: Upload artifact
-        uses: actions/upload-artifact@v4.6.2
+        uses: actions/upload-artifact@v5.0.0
         with:
           name: AppImage-${{ matrix.arch }}
           path: dist

.github/workflows/stable.yml

@@ -32,7 +32,7 @@ jobs:
         run: chmod +x ./*-appimage.sh && ./*-appimage.sh
 
       - name: Upload artifact
-        uses: actions/upload-artifact@v4.6.2
+        uses: actions/upload-artifact@v5.0.0
         with:
           name: AppImage-${{ matrix.arch }}
           path: dist