chore: [Snyk] Fix for 7 vulnerabilities (#6075)

* fix: Gemfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-RUBY-LOOFAH-3168317
- https://snyk.io/vuln/SNYK-RUBY-LOOFAH-3168318
- https://snyk.io/vuln/SNYK-RUBY-LOOFAH-3168649
- https://snyk.io/vuln/SNYK-RUBY-RAILSHTMLSANITIZER-3168316
- https://snyk.io/vuln/SNYK-RUBY-RAILSHTMLSANITIZER-3168646
- https://snyk.io/vuln/SNYK-RUBY-RAILSHTMLSANITIZER-3168647
- https://snyk.io/vuln/SNYK-RUBY-RAILSHTMLSANITIZER-3168648

* chore: update gemlock

Co-authored-by: snyk-bot <snyk-bot@snyk.io>

Gemfile.lock

@@ -765,12 +765,12 @@ DEPENDENCIES
   rack-attack
   rack-cors
   rack-timeout
-  rails (~> 6.1)
+  rails (~> 6.1, >= 6.1.6.1)
   redis
   redis-namespace
   responders
   rest-client
-  rspec-rails (~> 5.0.0)
+  rspec-rails (~> 5.0.3)
   rspec_junit_formatter
   rubocop
   rubocop-performance
@@ -778,7 +778,7 @@ DEPENDENCIES
   rubocop-rspec
   scout_apm
   seed_dump
-  sentry-rails (~> 5.3)
+  sentry-rails (~> 5.3, >= 5.3.1)
   sentry-ruby (~> 5.3)
   sentry-sidekiq (~> 5.3)
   shoulda-matchers
@@ -799,7 +799,7 @@ DEPENDENCIES
   valid_email2
   web-console
   webmock
-  webpacker (~> 5.x)
+  webpacker (~> 5.4, >= 5.4.3)
   webpush
   wisper (= 2.0.0)
   working_hours