Update jwt gem from v2 to v3

Author: collimarco

lib/web_push/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module WebPush
-  VERSION = '3.0.1'.freeze
+  VERSION = '3.0.2'.freeze
 end

web-push.gemspec

@@ -14,7 +14,7 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 3.0'
 
-  spec.add_dependency 'jwt', '~> 2.0'
+  spec.add_dependency 'jwt', '~> 3.0'
   spec.add_dependency 'openssl', '~> 3.0'
 
   spec.add_development_dependency 'rspec', '~> 3.0'