Update CHANGELOG and bump version in gemspec

Author: estolfo

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 12.0.8
+- Add drop_error_types config option to not retry after certain error types [#1228](https://github.com/logstash-plugins/logstash-output-elasticsearch/pull/1228)
+
 ## 12.0.7
  - Support both, encoded and non encoded api-key formats on plugin configuration [#1223](https://github.com/logstash-plugins/logstash-output-elasticsearch/pull/1223)
 

logstash-output-elasticsearch.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name            = 'logstash-output-elasticsearch'
-  s.version         = '12.0.7'
+  s.version         = '12.0.8'
   s.licenses        = ['apache-2.0']
   s.summary         = "Stores logs in Elasticsearch"
   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"