JDK 10 is no longer supported on linux

See https://github.com/MicrosoftDocs/azure-devops-docs/issues/9008

Customers running this pipeline are seeing this message:
```
##[warning]JDK 9 and JDK 10 are out of support. Please switch to a later version in your project and pipeline. Attempting to build with JDK 11...
```