Merge branch 'ci-fedora-32' into 'master'

CI: Bump Fedora from 31 to 32

See merge request sane-project/backends!421

.gitlab-ci.yml

@@ -76,8 +76,8 @@ debian-10-full:
     - doc/sanei-html
     expire_in: 1 day
 
-fedora-31-clang:
-  image: $REGISTRY_HUB:fedora-31-clang
+fedora-32-clang:
+  image: $REGISTRY_HUB:fedora-32-clang
   variables:
     CONFIGURE_OPTS: "$CONFIGURE_MINI $CONFIGURE_FULL"
   <<: *compile_definition