Adjust github actions

Author: laurynas

.github/workflows/main.yml

@@ -21,6 +21,7 @@ jobs:
         with:
           ruby-version: ${{ matrix.ruby-version }}
 #          bundler-cache: true
+      - run: bundle install
       - env:
           DETECTLANGUAGE_API_KEY: ${{ secrets.DETECTLANGUAGE_API_KEY }}
         run: bundle exec rake spec