RFR: 8068: Move JMC 9 to JDK 17

[Brice Dutheil]

On Tue, 9 May 2023 20:30:41 GMT, Henrik Dafgård <hdafgard at openjdk.org> wrote:

>> This PR builds atop #359 which has a number of improvement.
>> * #359
>> 
>> It removed older platform that didn't support Java17 (see https://wiki.eclipse.org/Eclipse/Installation).
>> 
>> I didn't changed the agent to 17 though.
>
> The tycho version update would be required for this.

@Gunde Is it ?
> The tycho version update would be required for this.

According to this [tycho issue comment](https://github.com/eclipse-tycho/tycho/issues/302#issuecomment-1019016100) it should work with 2.6.0.

@viragpurnam I was hesitant to bump every maven version there, I'd rather bump in a different PR (unless required to build JMC on JDK 17 like Tycho).

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PR Comment: https://git.openjdk.org/jmc/pull/482#issuecomment-1542733167