Bump rubocop-capybara from 2.21.0 to 2.22.1

`Capybara/ClickLinkOrButtonStyle` is now deprecated, so we're replacing
it with `Capybara/AmbiguousClick`.

We're also changing the `.rubocop.yml` file because we were getting a
warning:

```
rubocop-capybara extension supports plugin, specify `plugins:
rubocop-capybara` instead of `require: rubocop-capybara` in
.rubocop.yml.  For more information, see
https://docs.rubocop.org/rubocop/plugin_migration_guide.html.
```

Bumps [rubocop-capybara](https://github.com/rubocop/rubocop-capybara) from 2.21.0 to 2.22.1.
- [Release notes](https://github.com/rubocop/rubocop-capybara/releases)
- [Changelog](https://github.com/rubocop/rubocop-capybara/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rubocop/rubocop-capybara/compare/v2.21.0...v2.22.1)

---
updated-dependencies:
- dependency-name: rubocop-capybara
  dependency-version: 2.22.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

.rubocop.yml

@@ -1,8 +1,8 @@
 plugins:
+  - rubocop-capybara
   - rubocop-factory_bot
   - rubocop-rspec
 require:
-  - rubocop-capybara
   - rubocop-performance
   - rubocop-rails
   - rubocop-rspec_rails
@@ -24,9 +24,8 @@ Bundler/OrderedGems:
   Enabled: true
   ConsiderPunctuation: true
 
-Capybara/ClickLinkOrButtonStyle:
+Capybara/AmbiguousClick:
   Enabled: true
-  EnforcedStyle: strict
 
 Capybara/CurrentPathExpectation:
   Enabled: true