RFR: 8308307: Update to gcc 12.2.0 on Linux

[Kevin Rushforth]

On Sat, 20 May 2023 14:56:16 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> Update the compiler on Linux to gcc 12.2. This provides the needed C++20 support for the next WebKit update.

Probably this is because the JDK decided to defer the update until JDK 22, but I'll check and let you know what I find.

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PR Comment: https://git.openjdk.org/jfx/pull/1141#issuecomment-1563396794