RFR: build: update to JDK 14.0.2

Tue Aug 18 13:42:08 UTC 2020

On Tue, 18 Aug 2020 13:31:03 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this small patch that updates the JDK to version 14.0.2.
> 
> Testing:
> - [x] `make test` passes on Linux x64
> - [x] `make images` passes on Linux x64
> 
> Thanks,
> Erik

Looks good!

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Marked as reviewed by rwestberg (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/723