RFR: 8293107: GHA: Bump to Ubuntu 22.04 [v5]

[Aleksey Shipilev]

On Thu, 1 Sep 2022 14:25:27 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> WIP, depends on #10083.
>> 
>> At this point, we can switch to Ubuntu 22.04 as the base for GHA runners. GHA would switch `ubuntu-latest` soon:
>>  https://github.blog/changelog/2022-08-09-github-actions-ubuntu-22-04-is-now-generally-available-on-github-hosted-runners/
>> 
>> This gives us several benefits:
>>   - we can expect that the availability of 20.04 runners would decline in future, while 22.04 enabled runners would become more available;
>>   - toolchains would now include GCC 11;
>>   - RISC-V cross-builds would become available; 
>> 
>> Additional testing:
>>  - [ ] GHA
>
> Aleksey Shipilev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:
> 
>  - Merge branch 'master' into JDK-8293107-ubuntu-22.04
>  - Merge branch 'master' into JDK-8293107-ubuntu-22.04
>  - Also update base image for debootstrap-ed sysroots
>  - Switch to Ubuntu 22.04

All right then!

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PR: https://git.openjdk.org/jdk/pull/10084