* Updated build-test-run.md no JDK later that 14.0.2
Added a recommendation about JDK version to use.
Build-test-run.md sugguested to install the latest JDK which let's you build OpenRefine, but running it does not work see:
https://github.com/OpenRefine/OpenRefine/issues/4106
This might be frustrating for beginners not aware of this issue.
* Update build-test-run.md
changed Java version recommendation according to disucussion on https://github.com/OpenRefine/OpenRefine/pull/4280
Co-authored-by: Antonin Delpeuch <antonin@delpeuch.eu>