[Security] Bump omniauth from 1.9.1 to 2.0.0

Bumps [omniauth](https://github.com/omniauth/omniauth) from 1.9.1 to 2.0.0. **This update includes a security fix.**
- [Release notes](https://github.com/omniauth/omniauth/releases)
- [Commits](https://github.com/omniauth/omniauth/compare/v1.9.1...v2.0.0)

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

Gemfile

@@ -35,7 +35,7 @@ gem 'jbuilder', '~> 2.10.1'
 gem 'sdoc', '~> 2.0.3',          group: :doc
 
 gem 'web-console', '~> 4.1.0', group: :development
-gem 'listen', '~> 3.4.0', group: :development
+gem 'listen', '~> 3.1.5', group: :development
 
 # Use Codacy for coverage
 gem 'codacy-coverage', :require => false

Gemfile.lock

@@ -86,8 +86,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.1.7)
-    crack (0.4.5)
-      rexml
+    crack (0.4.4)
     crass (1.0.6)
     devise (4.7.3)
       bcrypt (~> 3.0)
@@ -105,7 +104,7 @@ GEM
       multipart-post (>= 1.2, < 3)
       ruby2_keywords
     faraday-net_http (1.0.1)
-    ffi (1.14.2)
+    ffi (1.13.1)
     font-awesome-sass (5.15.1)
       sassc (>= 1.11)
     globalid (0.4.2)
@@ -121,9 +120,10 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     jwt (2.2.2)
-    listen (3.4.0)
-      rb-fsevent (~> 0.10, >= 0.10.3)
-      rb-inotify (~> 0.9, >= 0.9.10)
+    listen (3.1.5)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+      ruby_dep (~> 1.2)
     loofah (2.8.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -211,8 +211,8 @@ GEM
     responders (3.0.1)
       actionpack (>= 5.0)
       railties (>= 5.0)
-    rexml (3.2.4)
     ruby2_keywords (0.0.2)
+    ruby_dep (1.5.0)
     sassc (2.4.0)
       ffi (~> 1.9)
     sassc-rails (2.1.2)
@@ -251,7 +251,7 @@ GEM
       activemodel (>= 6.0.0)
       bindex (>= 0.4.0)
       railties (>= 6.0.0)
-    webmock (3.11.1)
+    webmock (3.11.0)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
@@ -278,7 +278,7 @@ DEPENDENCIES
   font-awesome-sass (~> 5.15.1)
   jbuilder (~> 2.10.1)
   jquery-rails (~> 4.4.0)
-  listen (~> 3.4.0)
+  listen (~> 3.1.5)
   mysql2 (~> 0.5.2)
   omniauth
   omniauth-github