[DOCS] Updates build badges on README.md

Author: picandocodigo

README.md

@@ -1,5 +1,5 @@
 # Elasticsearch
-[![7.17](https://github.com/elastic/elasticsearch-ruby/actions/workflows/7.17.yml/badge.svg?branch=7.17)](https://github.com/elastic/elasticsearch-ruby/actions/workflows/7.17.yml) [![8.16](https://github.com/elastic/elasticsearch-ruby/actions/workflows/8.16.yml/badge.svg?branch=8.16)](https://github.com/elastic/elasticsearch-ruby/actions/workflows/8.16.yml) [![8.17](https://github.com/elastic/elasticsearch-ruby/actions/workflows/8.17.yml/badge.svg?branch=8.17)](https://github.com/elastic/elasticsearch-ruby/actions/workflows/8.17.yml) [![main](https://github.com/elastic/elasticsearch-ruby/actions/workflows/main.yml/badge.svg?branch=main)](https://github.com/elastic/elasticsearch-ruby/actions/workflows/main.yml) [![Build status](https://badge.buildkite.com/e50e66eb71bf6566a6479c8a29b25458f6781ee8e52cee8d96.svg)](https://buildkite.com/elastic/elasticsearch-ruby)
+[![8.17](https://github.com/elastic/elasticsearch-ruby/actions/workflows/8.17.yml/badge.svg?branch=8.17)](https://github.com/elastic/elasticsearch-ruby/actions/workflows/8.17.yml) [![8.18](https://github.com/elastic/elasticsearch-ruby/actions/workflows/8.18.yml/badge.svg?branch=8.18)](https://github.com/elastic/elasticsearch-ruby/actions/workflows/8.18.yml) [![9.0](https://github.com/elastic/elasticsearch-ruby/actions/workflows/9.0.yml/badge.svg?branch=9.0)](https://github.com/elastic/elasticsearch-ruby/actions/workflows/9.0.yml) [![main](https://github.com/elastic/elasticsearch-ruby/actions/workflows/main.yml/badge.svg?branch=main)](https://github.com/elastic/elasticsearch-ruby/actions/workflows/main.yml) [![Build status](https://badge.buildkite.com/e50e66eb71bf6566a6479c8a29b25458f6781ee8e52cee8d96.svg)](https://buildkite.com/elastic/elasticsearch-ruby)
 
 **[Download the latest version of Elasticsearch](https://www.elastic.co/downloads/elasticsearch)**
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