Version Bump (#2888)

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#### Checklist:
- [ ] **LABELS** Add a label: `enhancement`, `bug`, `improvement`, `new
kit`, `deprecated`, or `breaking`. See [Changelog &
Labels](https://github.com/powerhome/playbook/wiki/Changelog-&-Labels)
for details.
- [ ] **DEPLOY** I have added the `milano` label to show I'm ready for a
review.
- [ ] **TESTS** I have added test coverage to my code.

playbook-website/Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: ../playbook
   specs:
-    playbook_ui (13.11.1)
+    playbook_ui (13.12.0)
       actionpack (>= 5.2.4.5)
       actionview (>= 5.2.4.5)
       activesupport (>= 5.2.4.5)

playbook/Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    playbook_ui (13.11.1)
+    playbook_ui (13.12.0)
       actionpack (>= 5.2.4.5)
       actionview (>= 5.2.4.5)
       activesupport (>= 5.2.4.5)

playbook/lib/playbook/version.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
 module Playbook
-  PREVIOUS_VERSION = "13.10.0"
-  VERSION = "13.11.1"
+  PREVIOUS_VERSION = "13.11.1"
+  VERSION = "13.12.0"
 end

playbook/package.json

@@ -1,6 +1,6 @@
 {
   "name": "playbook-ui",
-  "version": "13.11.1",
+  "version": "13.12.0",
   "description": "Nitro's Design System",
   "main": "./dist/playbook.js",
   "scripts": {