[gnome-font-viewer] gitignore: Add .fenv and .flatpak-builder directories

[Christopher Davis <christopherdavis src gnome org>]

commit 373e263a5591ccfdf018d9aacee1a5e0b40f6972
Author: Christopher Davis <christopherdavis gnome org>
Date:   Wed Aug 3 16:10:54 2022 -0400

    gitignore: Add .fenv and .flatpak-builder directories
    
    These directories are for build artifacts, which we
    don't want to commit.

 .gitignore | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitignore b/.gitignore
index 8b9a4e9..419ad98 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,3 +47,5 @@ src/org.gnome.font-viewer.service
 src/gnome-thumbnail-font
 stamp-h1
 xmldocs.make
+.fenv/
+.flatpak-builder/
\ No newline at end of file