[babl/pippin/ci-poke] ci: try to unblock CI failure by fetching less specific version

[Øyvind "pippin" Kolås <ok src gnome org>]

commit c855c062a716eb002204bc2297841873a8c579dc
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon May 3 22:22:11 2021 +0200

    ci: try to unblock CI failure by fetching less specific version

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7307c80da..2942cba90 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,7 +4,7 @@ cache:
 
 .build:
   stage: build
-  image: archlinux:base-20210214.0.15477
+  image: archlinux:base
   variables:
     PACMAN_CACHE: $CI_PROJECT_DIR/_pacman_cache
   artifacts: