Bump shoulda-matchers from 5.3.0 to 6.4.0

Bumps [shoulda-matchers](https://github.com/thoughtbot/shoulda-matchers) from 5.3.0 to 6.4.0.
- [Release notes](https://github.com/thoughtbot/shoulda-matchers/releases)
- [Changelog](https://github.com/thoughtbot/shoulda-matchers/blob/main/CHANGELOG.md)
- [Commits](thoughtbot/shoulda-matchers@v5.3.0...v6.4.0)

---
updated-dependencies:
- dependency-name: shoulda-matchers
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Gemfile

@@ -74,7 +74,7 @@ end
 
 group :test do
   gem "simplecov", require: false
-  gem "shoulda-matchers", "~> 5.0"
+  gem "shoulda-matchers", "~> 6.4"
 end
 gem "devise"
 gem "friendly_id"

Gemfile.lock

@@ -343,7 +343,7 @@ GEM
       rubocop (~> 1.61)
     ruby-progressbar (1.13.0)
     securerandom (0.3.1)
-    shoulda-matchers (5.3.0)
+    shoulda-matchers (6.4.0)
       activesupport (>= 5.2.0)
     simplecov (0.22.0)
       docile (~> 1.1)
@@ -444,7 +444,7 @@ DEPENDENCIES
   rubocop-rails
   rubocop-rails-omakase
   rubocop-rspec
-  shoulda-matchers (~> 5.0)
+  shoulda-matchers (~> 6.4)
   simple_form!
   simplecov
   standard (~> 1.0)