debian-gpl: Run on debian:bullseye instead of buster

* buster is now very old
* all the other jobs run bullseye
* This will facilitate switching to a TPA-maintained image (there is no
  buster image).

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 82176a1bfdd685228e7efc9073969db073e226d8..b3f98173b114bc5992b105048fc380007c0cbcad 100644 (file)
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -228,7 +228,7 @@ debian-disable-relay:
 #####
 # GPL licensed mode, enables pow module
 debian-gpl:
-  image: debian:buster
+  image: debian:bullseye
   <<: *debian-template
   variables:
     GPL: "yes"