feat: Update qt flatpak runtime

Author: nlogozzo

.github/workflows/flatpak.yml

@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.event.pull_request.user.login != 'weblate' }}
     container:
-      image: ghcr.io/flathub-infra/flatpak-github-actions:kde-6.8
+      image: ghcr.io/flathub-infra/flatpak-github-actions:kde-6.9
       options: --privileged
     strategy:
       matrix:

flatpak/org.nickvision.application.qt.json

@@ -1,7 +1,7 @@
 {
     "app-id" : "org.nickvision.application",
     "runtime" : "org.kde.Platform",
-    "runtime-version" : "6.8",
+    "runtime-version" : "6.9",
     "sdk" : "org.kde.Sdk",
     "command" : "org.nickvision.application",
     "finish-args":[