GNOME 44 runtime is end-of-life

[deejf]

Using: Flatpak
Desktop Environment: Xfce
OS: Fedora 39.
I am not using Wayland (yet).

Steps:
1. Open terminal
2. Type "flatpak update"
3. See the following:

Info: runtime org.gnome.Platform branch 44 is end-of-life, with reason:
The GNOME 44 runtime is no longer supported as of March 20, 2024. Please ask your application developer to migrate to a supported platform.
Info: applications using this runtime:
com.github.kmwallio.thiefmd

As problems go, it's minor, but having an out of date runtime taking up space for one app also seems silly.