chore: use newer MultiJSON module name (#48)

* Addresses deprecation in multi_json

* MultiJson become MultiJSON
* :symbolize_keys becomes :symbolize_names

* Update multi_json version to match code

Author: hms

ffmpeg.gemspec

@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
   s.required_ruby_version = '>= 3.2'
 
   s.add_dependency('logger', '~> 1.6')
-  s.add_dependency('multi_json', '~> 1.8')
+  s.add_dependency('multi_json', '~> 1.21.0')
   s.add_dependency('nokogiri', '~> 1.18')
   s.add_dependency('shellwords', '~> 0.2')
 

lib/ffmpeg/media.rb

@@ -214,8 +214,8 @@ def load!
       )
 
       begin
-        @metadata = MultiJson.load(stdout, symbolize_keys: true)
-      rescue MultiJson::ParseError => e
+        @metadata = MultiJSON.parse(stdout, symbolize_names: true)
+      rescue MultiJSON::ParseError => e
         raise LoadError.new(e.message.capitalize, stdout)
       end