Bump capistrano from 3.8.1 to 3.12.0

Bumps [capistrano](https://github.com/capistrano/capistrano) from 3.8.1 to 3.12.0.
- [Release notes](https://github.com/capistrano/capistrano/releases)
- [Commits](capistrano/capistrano@v3.8.1...v3.12.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

Gemfile

@@ -47,7 +47,7 @@ gem 'whenever', require: false
 
 # Deploy with Capistrano
 group :deploy do
-  gem 'capistrano', '~> 3.8.1'
+  gem 'capistrano', '~> 3.12.0'
   gem 'capistrano-rails', '~> 1.2.3'
   gem 'capistrano-rbenv', '~> 2.1.1'
   gem 'capistrano-bundler', '~> 1.2.0'

Gemfile.lock

@@ -68,7 +68,7 @@ GEM
       tzinfo (~> 1.1)
     addressable (2.6.0)
       public_suffix (>= 2.0.2, < 4.0)
-    airbrussh (1.2.0)
+    airbrussh (1.4.0)
       sshkit (>= 1.6.1, != 1.7.0)
     arel (6.0.4)
     ast (2.4.0)
@@ -94,7 +94,7 @@ GEM
     builder (3.2.3)
     byebug (10.0.2)
     cancan (1.6.10)
-    capistrano (3.8.1)
+    capistrano (3.12.0)
       airbrussh (>= 1.0.0)
       i18n
       rake (>= 10.0.0)
@@ -238,9 +238,9 @@ GEM
     multi_json (1.13.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
-    net-scp (1.2.1)
-      net-ssh (>= 2.6.5)
-    net-ssh (4.1.0)
+    net-scp (2.0.0)
+      net-ssh (>= 2.6.5, < 6.0.0)
+    net-ssh (5.2.0)
     netrc (0.10.3)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
@@ -418,7 +418,7 @@ GEM
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
-    sshkit (1.13.1)
+    sshkit (1.20.0)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
     stomp (1.3.4)
@@ -464,7 +464,7 @@ DEPENDENCIES
   bootstrap-sass (~> 2.3.2.2)
   bower-rails (~> 0.11.0)
   byebug
-  capistrano (~> 3.8.1)
+  capistrano (~> 3.12.0)
   capistrano-bundler (~> 1.2.0)
   capistrano-rails (~> 1.2.3)
   capistrano-rbenv (~> 2.1.1)