Bump ruby/setup-ruby

Bumps the github-actions-dependencies group with 1 update in the / directory: [ruby/setup-ruby](https://github.com/ruby/setup-ruby).


Updates `ruby/setup-ruby` from 1.306.0 to 1.310.0
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@v1.306.0...v1.310.0)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.307.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/rubyonrails.yml

@@ -37,7 +37,7 @@ jobs:
         uses: actions/checkout@v6
       # Add or replace dependency steps here
       - name: Install Ruby and gems
-        uses: ruby/setup-ruby@v1.306.0
+        uses: ruby/setup-ruby@v1.310.0
         with:
           bundler-cache: true
       # Add or replace database setup steps here
@@ -54,7 +54,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v6
       - name: Install Ruby and gems
-        uses: ruby/setup-ruby@v1.306.0
+        uses: ruby/setup-ruby@v1.310.0
         with:
           bundler-cache: true
       # TODO: Reinstate brakeman as soon as we have upgraded rails