run build test on every PR so we can make it mandatory for merging

.github/workflows/ci.yml

@@ -8,17 +8,6 @@ concurrency:
 on:
   pull_request:
     types: [opened, reopened, synchronize, ready_for_review]
-    paths:
-      - 'Gemfile.lock'
-      - '**/*.md'
-      - '**/*.html'
-      - '*.yml'
-      - '*.yaml'
-      - 'metadata/*'
-      - 'topics/*/images/*'
-      - '_plugins/*'
-      - '_plugins_dev/*'
-      - '**/*.bib'
 
 jobs:
   build-site: