Update application Freedesktop runtime

[cmosetick]

Low priority problem here, freedesktop 19.08 says that it is end of life now:

flatpak update -y   
Looking for updates…

Info: org.freedesktop.Platform//19.08 is end-of-life, with reason:
   The Freedesktop SDK 19.08 runtime is no longer supported as of September 1, 2021. Please ask your application developer to migrate to a supported version
   
Applications using this runtime:
   com.github.miguelmota.Cointop

Info: org.freedesktop.Platform.GL.default//19.08 is end-of-life, with reason:
   The Freedesktop SDK 19.08 runtime is no longer supported as of September 1, 2021. Please ask your application developer to migrate to a supported version

Note that I also have on the same system runtime versions:
20.08.15
21.08.2

CC:
cointop-sh/cointop#167

[miguelmota]

Closed by 91a75e1