revbump(x11/{firefox,thunderbird}): revbump for ffmpeg-8.0

[TomJo2000]

• Blocked until bump(main/ffmpeg): 8.0, bump(x11/ffplay): 8.0 + revbumps #27184 is merged

[TomJo2000]

• This PR can also double as a rebuild for Libicu 78.1.
  bump(main/libicu): 78.1 #27221

[TomJo2000]

Ah shit the 64 bit builds for thunderbird failed, that didn't happen in testing.
Not sure if this is a fluke or prefix pollution or what.
Gonna close this PR and do thunderbird and firefox separately.

[robertkirkman]

If you want to bump thunderbird to 145 in the next version of this, I placed instructions how here

• Auto update failing for thunderbird #27247

[TomJo2000]

• Thunderbird was already rebuilt in revbump(x11/thunderbird): revbump for ffmpeg-8.0 #27246

[robertkirkman]

oh ok

[TomJo2000]

I didn't realize Thunderbird 145 had already released.