[fractal] misc: Update .gitignore for fenv

[Marge Bot <marge-bot src gnome org>]

commit b48a325c39799c76dc2a5914506412ebeca6e523
Author: Kévin Commaille <zecakeh tedomum fr>
Date:   Wed Aug 31 15:08:40 2022 +0200

    misc: Update .gitignore for fenv
    
    Part-of: <https://gitlab.gnome.org/GNOME/fractal/-/merge_requests/1140>

 .gitignore | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 841161cb1..1eb335a60 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,11 +3,12 @@ build/
 _build/
 builddir/
 build-aux/app
-build-aux/.flatpak-builder/
+.flatpak-builder
 src/config.rs
 *.ui.in~
 *.ui~
 .flatpak
 subprojects/libadwaita
 subprojects/gtksourceview
-.vscode
\ No newline at end of file
+.vscode
+.fenv
\ No newline at end of file