Bump json from 2.2.0 to 2.3.0 (#92)

Bumps [json](https://github.com/flori/json) from 2.2.0 to 2.3.0.
- [Release notes](https://github.com/flori/json/releases)
- [Changelog](https://github.com/flori/json/blob/master/CHANGES.md)
- [Commits](ruby/json@v2.2.0...v2.3.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile

@@ -4,6 +4,6 @@ ruby "2.6.3"
 
 gem 'dotenv', '2.7.4'
 gem 'encrypted_cookie', '0.0.5'
-gem 'json', '2.2.0'
+gem 'json', '2.3.0'
 gem 'sinatra', '2.0.5'
 gem 'stripe', '4.21.2'

Gemfile.lock

@@ -7,7 +7,7 @@ GEM
       rack (>= 1.1, < 3)
     faraday (0.15.4)
       multipart-post (>= 1.2, < 3)
-    json (2.2.0)
+    json (2.3.0)
     multipart-post (2.1.1)
     mustermann (1.0.3)
     net-http-persistent (3.0.1)
@@ -31,7 +31,7 @@ PLATFORMS
 DEPENDENCIES
   dotenv (= 2.7.4)
   encrypted_cookie (= 0.0.5)
-  json (= 2.2.0)
+  json (= 2.3.0)
   sinatra (= 2.0.5)
   stripe (= 4.21.2)