chore: update flatpak sdk to 6.10

Author: Green-Sky

qtox/docker/Dockerfile.flatpak-builder

@@ -22,8 +22,8 @@ RUN apt-get update \
 
 # Pre-download kde flatpak environment to speed up flatpak builds
 RUN flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo \
- && flatpak --system install -y --noninteractive flathub org.kde.Platform/x86_64/6.8 \
- && flatpak --system install -y --noninteractive flathub org.kde.Sdk/x86_64/6.8
+ && flatpak --system install -y --noninteractive flathub org.kde.Platform/x86_64/6.10 \
+ && flatpak --system install -y --noninteractive flathub org.kde.Sdk/x86_64/6.10
 
 WORKDIR /qtox
 ENV HOME=/qtox