[fractal] ci: Update for switch to fd.o 22.08 runtime

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

commit 0b2ebd3aaecda7460dd81f60e4d715944dd441c8
Author: Kévin Commaille <zecakeh tedomum fr>
Date:   Sat Sep 3 09:58:01 2022 +0200

    ci: Update for switch to fd.o 22.08 runtime
    
    Part-of: <https://gitlab.gnome.org/GNOME/fractal/-/merge_requests/1144>

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index acaad9ac3..c311377ce 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -136,7 +136,7 @@ pages:
   tags:
     - flatpak
   script:
-    - flatpak install --user --noninteractive org.freedesktop.Sdk.Extension.rust-nightly//22.08beta
+    - flatpak install --user --noninteractive org.freedesktop.Sdk.Extension.rust-nightly//22.08
     - sed -i 's|rust-stable|rust-nightly|g' ${MANIFEST_PATH}
     - flatpak-builder --keep-build-dirs --user --disable-rofiles-fuse --stop-at=${FLATPAK_MODULE} 
flatpak_app --repo=repo ${BRANCH:+--default-branch=$BRANCH} ${MANIFEST_PATH}
     - echo "ninja src/doc" | flatpak-builder --disable-rofiles-fuse --build-shell=${FLATPAK_MODULE} 
flatpak_app ${MANIFEST_PATH}