Update Flatpak runtime to version 6.10 in CI

Changed the Flatpak runtime and SDK version from 6.6 to 6.10 in the build-linux GitHub Actions workflow to ensure compatibility with the latest KDE platform.

.github/workflows/build-linux.yml

@@ -397,7 +397,7 @@ jobs:
         {
           "app-id": "$APP_ID",
           "runtime": "org.kde.Platform",
-          "runtime-version": "6.6",
+          "runtime-version": "6.10",
           "sdk": "org.kde.Sdk",
           "command": "ytsage",
           "finish-args": [
@@ -449,7 +449,7 @@ jobs:
         cp -r "$build_dir"/* "dist/ytsage-v${version}-flatpak/"
         
         # Install runtime/sdk
-        flatpak install -y --user flathub org.kde.Platform//6.6 org.kde.Sdk//6.6
+        flatpak install -y --user flathub org.kde.Platform//6.10 org.kde.Sdk//6.10
 
         # Build
         flatpak-builder --user --install-deps-from=flathub --repo=repo --force-clean build-flatpak ytsage_flatpak.json