fix : deploy job is allowed to fail

This exist for 2 reasons :
- random tests can lead to random unit tests failure
- the following line causes random failure on windows build jobs : https://gitlab.eclipse.org/eclipse/aidge/gitlab_shared_files/-/blob/main/.gitlab/ci/download/download.gitlab-ci.yml?ref_type=heads#L162

.gitlab/ci/rules.gitlab-ci.yml

@@ -42,5 +42,5 @@
 .rules:deploy:
   rules:
     - if: $CI_COMMIT_TAG 
-  allow_failure: false
+  allow_failure: true
   when: on_success