[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', '~> 3.4.1', group: :development
+gem 'listen', '~> 3.4.0', group: :development
 
 # Use Codacy for coverage
 gem 'codacy-coverage', :require => false

Gemfile.lock

@@ -121,7 +121,7 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     jwt (2.2.2)
-    listen (3.4.1)
+    listen (3.4.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     loofah (2.8.0)
@@ -278,7 +278,7 @@ DEPENDENCIES
   font-awesome-sass (~> 5.15.1)
   jbuilder (~> 2.10.1)
   jquery-rails (~> 4.4.0)
-  listen (~> 3.4.1)
+  listen (~> 3.4.0)
   mysql2 (~> 0.5.2)
   omniauth
   omniauth-github