[fractal] (7 commits) Non-fast-forward update to branch strings-again

[Alexandre Franke <afranke src gnome org>]

The branch 'strings-again' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  9056eb4... Improve wording

Commits added to the branch:

  fabbf51... session: Don't require master cross-signing key (*)
  ee85c57... ci: Build ci and nightly flatpak in release mode (*)
  e20d00a... Generate debug symbols in release mode (*)
  6ade438... ci: Fix nightly build (*)
  9c3d155... ci: Only build nightly version on main (*)
  dfb6943... ci: Fix publish_nightly dependency (*)
  e90312f... Improve wording

(*) This commit already existed in another branch; no separate mail sent