RFR: 8293107: GHA: Bump to Ubuntu 22.04

[Aleksey Shipilev]

On Tue, 30 Aug 2022 13:41:16 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

I realized some ports still not able to build cleanly with GCC 11, so I retracted that bit from this PR, leaving only the update to Ubuntu version. We can switch to GCC 11 separately.

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