Bump shoulda-matchers from 6.0.0 to 6.1.0 (#730)

Bumps [shoulda-matchers](https://github.com/thoughtbot/shoulda-matchers) from 6.0.0 to 6.1.0.
- [Release notes](https://github.com/thoughtbot/shoulda-matchers/releases)
- [Changelog](https://github.com/thoughtbot/shoulda-matchers/blob/main/CHANGELOG.md)
- [Commits](thoughtbot/shoulda-matchers@v6.0.0...v6.1.0)

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

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

Gemfile.lock

@@ -141,7 +141,7 @@ GEM
       execjs (~> 2)
     awesome_print (1.9.2)
     base64 (0.2.0)
-    bigdecimal (3.1.5)
+    bigdecimal (3.1.6)
     bootstrap-sass (3.4.1)
       autoprefixer-rails (>= 5.2.1)
       sassc (>= 2.0.0)
@@ -161,7 +161,7 @@ GEM
       xpath (~> 3.2)
     cgi (0.3.6)
     cliver (0.3.2)
-    concurrent-ruby (1.2.2)
+    concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
     console (1.17.0)
       fiber-annotation
@@ -277,7 +277,7 @@ GEM
     mime-types-data (3.2023.1205)
     mini_mime (1.1.5)
     mini_portile2 (2.8.5)
-    minitest (5.20.0)
+    minitest (5.21.2)
     multi_json (1.15.0)
     mutex_m (0.2.0)
     net-imap (0.4.9.1)
@@ -451,7 +451,7 @@ GEM
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
-    shoulda-matchers (6.0.0)
+    shoulda-matchers (6.1.0)
       activesupport (>= 5.2.0)
     simplecov (0.17.1)
       docile (~> 1.1)