Put back normalize mixin dependency.

Author: mashhurs

logstash-filter-elasticsearch.gemspec

@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
   s.description     = "This gem is a Logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/logstash-plugin install gemname. This gem is not a stand-alone program"
   s.authors         = ["Elastic"]
   s.email           = 'info@elastic.co'
-  s.homepage        = "http://www.elastic.co/guide/en/logstash/current/index.html"
+  s.homepage        = "https://elastic.co/logstash"
   s.require_paths = ["lib"]
 
   # Files
@@ -24,6 +24,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'elasticsearch', ">= 7.14.9" # LS >= 6.7 and < 7.14 all used version 5.0.5
   s.add_runtime_dependency 'manticore', ">= 0.7.1"
   s.add_runtime_dependency 'logstash-mixin-ca_trusted_fingerprint_support', '~> 1.0'
+  s.add_runtime_dependency 'logstash-mixin-normalize_config_support', '~>1.0'
   s.add_development_dependency 'cabin', ['~> 0.6']
   s.add_development_dependency 'webrick'
   s.add_development_dependency 'logstash-devutils'