Maintenance: Update omniauth packages to v1.2.1

Gemfile.lock

@@ -418,7 +418,7 @@ GEM
       rack (>= 1.2, < 4)
       snaky_hash (~> 2.0)
       version_gem (~> 1.1)
-    omniauth (2.1.2)
+    omniauth (2.1.3)
       hashie (>= 3.4.6)
       rack (>= 2.2.3)
       rack-protection
@@ -451,7 +451,7 @@ GEM
     omniauth-rails_csrf_protection (1.0.2)
       actionpack (>= 4.2)
       omniauth (~> 2.0)
-    omniauth-saml (2.2.1)
+    omniauth-saml (2.2.2)
       omniauth (~> 2.1)
       ruby-saml (~> 1.17)
     omniauth-twitter (1.4.0)
@@ -527,7 +527,7 @@ GEM
       rspec-mocks (~> 3.12)
       rspec-support (~> 3.12)
     racc (1.8.1)
-    rack (2.2.11)
+    rack (2.2.12)
     rack-attack (6.7.0)
       rack (>= 1.0, < 4)
     rack-oauth2 (2.2.1)
@@ -776,7 +776,7 @@ GEM
       public_suffix
     vcr (6.3.1)
       base64
-    version_gem (1.1.4)
+    version_gem (1.1.6)
     viewpoint (1.1.1)
       httpclient
       logging