ci.yml in simple_calendar-3.0.3

- old
+ new

@@ -4,19 +4,20 @@
   pull_request:
     branches:
       - '*'
   push:
     branches:
-      - master
+      - main
 jobs:
   tests:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ['2.7', '3.0', '3.1', '3.2']
+        ruby: ['3.1', '3.2', '3.3']
         gemfile:
           - rails_6_1
           - rails_7_0
+          - rails_7_1
           - rails_main
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
       BUNDLE_PATH_RELATIVE_TO_CWD: true
 