Update core_data_tests.yml

Author: ccrama

.github/workflows/core_data_tests.yml

@@ -16,6 +16,9 @@ jobs:
         with:
           ruby-version: 2.6 # Not needed with a .ruby-version file
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+      - name: Install Fastlane
+        run: |
+          gem install fastlane
       - name: Cache Pods
         uses: actions/[email protected]
         with: