Update version to 10.0.2 and add changelog entry (#862)

Author: robbavey

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 10.0.2
+  - Fixed bug where index patterns in custom templates could be erroneously overwritten [#861](https://github.com/logstash-plugins/logstash-output-elasticsearch/pull/861)
+
 ## 10.0.1
   - Reverted `document_type` obsoletion [#844](https://github.com/logstash-plugins/logstash-output-elasticsearch/pull/844)
 

logstash-output-elasticsearch.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name            = 'logstash-output-elasticsearch'
-  s.version         = '10.0.1'
+  s.version         = '10.0.2'
   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"