[calls] ci: (Slightly) rename flatpak CI job

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit eae9fb0ef038e9c67c5aad269a00c3d3eaa4c692
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Sat Sep 3 16:32:38 2022 +0200

    ci: (Slightly) rename flatpak CI job

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index facb7476..44061b73 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -77,7 +77,7 @@ package:deb-pureos-byzantium:arm64:
     - aarch64
   extends: .l5-build-debian-package
 
-flatpak:master:
+flatpak:main:
   extends: .flatpak
   stage: package
   allow_failure: true