concepts: GnuPG-replacement: Update Flatpak info

Starting with Apertis v2022dev2, `Flatpak` is also able to use `Ed25519`
cryptography.

Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>

content/concepts/gnupg-replacement.md

@@ -107,7 +107,7 @@ Flatpak application and library use both `libgpgme11` and `libostree`.
 - during development to sign the package and summaries,
 - and on target to verify the signatures.
 
-Apertis is currently adding `Ed25519` support to `Flatpak`.
+Starting with Apertis v2022dev2, `Flatpak` is also able to use `Ed25519` cryptography.
 
 ## gmime