Update Rails requirement from >= 7.0, < 8 to >= 7.0, < 9 (#116)

* Update activesupport & activerecord requirement from >= 7.0, < 8 to >= 7.0, < 9

Updates the requirements on [activesupport](https://github.com/rails/rails) to permit the latest version.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v8.0.0/activesupport/CHANGELOG.md)
- [Commits](rails/rails@v7.0.0...v7.2.2)

---
updated-dependencies:
- dependency-name: activesupport
  dependency-type: direct:production
- dependency-name: activerecord
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

* Add Rails 8 to test matrix

* Bump ActiveRecord to lt 9 as well

* Exclude Ruby 3.1/Rails 8 test combination

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tabby Cromarty <[email protected]>

.github/workflows/test.yml

@@ -20,7 +20,10 @@ jobs:
     strategy:
       matrix:
         ruby-version: [3.1, 3.2, 3.3]
-        rails-version: [7.0, 7.1, 7.2]
+        rails-version: [7.0, 7.1, 7.2, 8.0]
+        exclude:
+          - ruby-version: 3.1
+            rails-version: 8.0
     runs-on: ubuntu-latest
     env:
       RAILS_VERSION: ${{ matrix.rails-version }}

anony.gemspec

@@ -38,8 +38,8 @@ Gem::Specification.new do |spec|
     spec.add_dependency "activerecord", "~> #{ENV['RAILS_VERSION']}"
     spec.add_dependency "activesupport", "~> #{ENV['RAILS_VERSION']}"
   else
-    spec.add_dependency "activerecord", ">= 7.0", "< 8"
-    spec.add_dependency "activesupport", ">= 7.0", "< 8"
+    spec.add_dependency "activerecord", ">= 7.0", "< 9"
+    spec.add_dependency "activesupport", ">= 7.0", "< 9"
   end
   spec.metadata["rubygems_mfa_required"] = "true"
 end