Runtime org.gnome.Platform branch 41 is end-of-life, so upgrade to a newer version

[Arthur Nieuwland]

❯ flatpak update
Info: runtime org.gnome.Platform branch 41 is end-of-life, with reason:
   The GNOME 41 runtime is no longer supported as of September 17, 2022. Please ask your application developer to migrate to a supported platform.
Info: applications using this runtime:
   eu.nimmerfort.blackbody

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