[gimp-web] gitlab-ci: install python3-requests.

[Jehan <jehanp src gnome org>]

commit 89abb312ea221a7bf7120274f7fb835dd7b32b76
Author: Jehan <jehan girinstud io>
Date:   Fri Sep 24 20:27:57 2021 +0200

    gitlab-ci: install python3-requests.

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 581749f4..9fe8690e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,6 +9,7 @@ check-mirrors:
     - apt-get update
     - apt-get install -y --no-install-recommends
         python3
+        python3-requests
   script:
     # Check that the mirror lists are consistent so that the sponsors
     # page always display exactly the right list of mirrors (no more no