Add Google (#3868)

Author: jamesward

docs/index.md

@@ -163,6 +163,7 @@ A huge thank you to our sponsors:
 * [Apache SkyWalking](http://github.com/apache/skywalking) - End-to-end testing of the Apache SkyWalking, and plugin tests of its subproject, [Apache SkyWalking Python](http://github.com/apache/skywalking-python), and of its eco-system built by the community, like [SkyAPM NodeJS Agent](http://github.com/SkyAPM/nodejs)
 * [jOOQ](https://www.jooq.org) - Integration testing all of jOOQ with a variety of RDBMS
 * [Trino (formerly Presto SQL)](https://trino.io) - Integration testing all Trino core & connectors, including tests of multi-node deployments and security configurations.
+* Google - Various open source projects: [OpenTelemetry](https://github.com/GoogleCloudPlatform/opentelemetry-operations-java), [Universal Application Tool](https://github.com/seattle-uat/universal-application-tool), [CloudBowl](https://github.com/GoogleCloudPlatform/cloudbowl-microservice-game)
 
 
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