Bump omniauth-cas from 1.1.1 to 2.0.0 (#15165)

Bumps [omniauth-cas](https://github.com/dlindahl/omniauth-cas) from 1.1.1 to 2.0.0.
- [Release notes](https://github.com/dlindahl/omniauth-cas/releases)
- [Changelog](https://github.com/dlindahl/omniauth-cas/blob/master/CHANGELOG.md)
- [Commits](https://github.com/dlindahl/omniauth-cas/compare/v1.1.1...v2.0.0)

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

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

Gemfile

@@ -44,7 +44,7 @@ group :pam_authentication, optional: true do
 end
 
 gem 'net-ldap', '~> 0.16'
-gem 'omniauth-cas', '~> 1.1'
+gem 'omniauth-cas', '~> 2.0'
 gem 'omniauth-saml', '~> 1.10'
 gem 'omniauth', '~> 1.9'
 

Gemfile.lock

@@ -371,7 +371,7 @@ GEM
     omniauth (1.9.1)
       hashie (>= 3.4.6)
       rack (>= 1.6.2, < 3)
-    omniauth-cas (1.1.1)
+    omniauth-cas (2.0.0)
       addressable (~> 2.3)
       nokogiri (~> 1.5)
       omniauth (~> 1.2)
@@ -741,7 +741,7 @@ DEPENDENCIES
   nsa (~> 0.2)
   oj (~> 3.10)
   omniauth (~> 1.9)
-  omniauth-cas (~> 1.1)
+  omniauth-cas (~> 2.0)
   omniauth-saml (~> 1.10)
   ox (~> 2.13)
   paperclip (~> 6.0)