chore(flatpak): Fix flatpak CI build

Author: leandromqrs

.github/workflows/release-flatpak.yml

@@ -49,12 +49,13 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install -y flatpak flatpak-builder
-          sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+          flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
 
       - name: Build Flatpak
         run: |
           set -euo pipefail
           flatpak-builder \
+            --user \
             --force-clean \
             --disable-rofiles-fuse \
             --install-deps-from=flathub \