Add Ruby 4.0 and Rails 8.1 to CI (#57)

Author: westonganger

.github/workflows/test.yml

@@ -20,6 +20,7 @@ jobs:
           - ruby: "3.2"
           - ruby: "3.3"
           - ruby: "3.4"
+          - ruby: "4.0"
 
           ### TEST RAILS VERSIONS
           - ruby: "2.6"
@@ -28,15 +29,17 @@ jobs:
             rails_version: "~> 6.0.0"
           - ruby: "2.6"
             rails_version: "~> 6.1.0"
-          - ruby: "3.3"
+          - ruby: "4.0"
             rails_version: "~> 7.0.0"
-            db_gem_version: "~> 1.4" # fixes sqlite3 gem dependency issue
-          - ruby: "3.4"
+            db_gem_version: "~> 1.4" # fixes sqlite4.0em dependency issue
+          - ruby: "4.0"
             rails_version: "~> 7.1.0"
-          - ruby: "3.4"
+          - ruby: "4.0"
             rails_version: "~> 7.2.0"
-          - ruby: "3.4"
+          - ruby: "4.0"
             rails_version: "~> 8.0.0"
+          - ruby: "4.0"
+            rails_version: "~> 8.1.0"
 
           ### TEST PT VERSIONS
           - ruby: "2.6"
@@ -47,11 +50,13 @@ jobs:
             paper_trail_version: "~> 14.0"
           - ruby: "3.1"
             paper_trail_version: "~> 15.0"
+          - ruby: "4.0"
+            paper_trail_version: "~> 15.0"
 
           ### TEST NON-SQLITE DATABASES
-          - ruby: "3.4"
+          - ruby: "4.0"
             db_gem: "mysql2"
-          - ruby: "3.4"
+          - ruby: "4.0"
             db_gem: "pg"
 
     services: