RFR: 1216: Update to JDK 17 and Gradle 7.2 [v2]

Wed Oct 13 23:22:06 UTC 2021

On Wed, 13 Oct 2021 21:41:47 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

>> This patch bumps the required JDK version to build and run Skara to JDK 17 and the version of Gradle to 7.2. I'm also eliminating some redundant declarations of where to download the JDK binaries so that it's all defined in deps.env.
>
> Erik Joelsson has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update gradle wrapper

Looks good.

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Marked as reviewed by kcr (Reviewer).

PR: https://git.openjdk.java.net/skara/pull/1235