test: add rails 8.1 appraisal matrix and require logger

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
         include:
           # ruby 3.x
           - ruby: '3.2'
-            gemfile: gemfiles/rails_80.gemfile
+            gemfile: gemfiles/rails_81.gemfile
           - ruby: '3.2'
             gemfile: gemfiles/rails_72.gemfile
           - ruby: '3.2'