Updated workflow so that unit test and lint are two different stages

Was a bug causing it not to work if these two jobs were running at the same time, most likely related to caching, must be tested.

.gitlab-ci.yml

@@ -10,6 +10,7 @@ stages:
   - install
   - build
   - test
+  - lint
 
 install_dependencies:
   stage: install
@@ -48,7 +49,7 @@ vitest_unit-tests:
     policy: pull
 
 eslint_run-lint:
-  stage: test
+  stage: lint
   script:
     - npm ci
     - npm run lint