Do not rebuild fonts after creating a Git tag

.gitlab-ci.yml

@@ -30,6 +30,10 @@ prepare_environment:
 
 build:
   stage: build
+  rules:
+    - if: $CI_COMMIT_TAG
+      when: never
+    - if: $CI_COMMIT_BRANCH
   image:
     name: debian:bullseye
   before_script: