Bump psych from 4.0.6 to 5.1.1

Bumps [psych](https://github.com/ruby/psych) from 4.0.6 to 5.1.1.
- [Release notes](https://github.com/ruby/psych/releases)
- [Commits](ruby/psych@v4.0.6...v5.1.1)

---
updated-dependencies:
- dependency-name: psych
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Gemfile

@@ -13,7 +13,7 @@ gem "httparty"
 gem "pact", require: false
 gem "pact_broker-client"
 gem "pg"
-gem "psych", "<5"
+gem "psych", "<6"
 gem "rubyzip"
 gem "sentry-sidekiq"
 gem "sidekiq-scheduler"

Gemfile.lock

@@ -476,7 +476,7 @@ GEM
     plek (5.0.0)
     prometheus_exporter (2.0.8)
       webrick
-    psych (4.0.6)
+    psych (5.1.1)
       stringio
     public_suffix (5.0.3)
     puma (6.4.0)
@@ -684,7 +684,7 @@ DEPENDENCIES
   pact
   pact_broker-client
   pg
-  psych (< 5)
+  psych (< 6)
   rails (= 7.1.0)
   rspec-rails
   rubocop-govuk