Add CI coverage for Rails 8

Author: joelhawksley

.github/workflows/ci.yml

@@ -51,6 +51,12 @@ jobs:
           - ruby_version: "3.3"
             rails_version: "7.2"
             mode: "capture_patch_enabled"
+          - ruby_version: "3.3"
+            rails_version: "8.0"
+            mode: "capture_patch_disabled"
+          - ruby_version: "3.3"
+            rails_version: "8.0"
+            mode: "capture_patch_enabled"
           - ruby_version: "head"
             rails_version: "main"
             mode: "capture_patch_disabled"