Update dependency omniauth-saml to v2.2.5 (#37944)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Gemfile.lock

@@ -488,7 +488,7 @@ GEM
     omniauth-rails_csrf_protection (2.0.1)
       actionpack (>= 4.2)
       omniauth (~> 2.0)
-    omniauth-saml (2.2.4)
+    omniauth-saml (2.2.5)
       omniauth (~> 2.1)
       ruby-saml (~> 1.18)
     omniauth_openid_connect (0.8.0)