RFR: 8275512: Upgrade required version of jtreg to 6.1 [v2]

[Lance Andersen]

On Tue, 19 Oct 2021 17:24:17 GMT, Weijun Wang <weijun at openjdk.org> wrote:

>> As a follow up of JEP 411, we will soon disallow security manager by default. jtreg 6.1 does not set its own security manager if JDK version is >= 18.
>
> Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   upgrade the version in GHA config
>   
>   only in patch2:
>   unchanged:

Marked as reviewed by lancea (Reviewer).

-------------

PR: https://git.openjdk.java.net/jdk/pull/6012