RFR: 8308114: Bump minimum version of macOS for x64 to 11.0 (matching aarch64)

[Andy Goryachev]

On Mon, 15 May 2023 18:13:00 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> This PR bumps the minimum deployment target for JavaFX to macOS 11.0 (Big Sur) on x64 platforms, matching the current minimum on aarch64.
> 
> As a follow-on to this, I will file a (low-priority) cleanup issue to remove any `@available` checks for 10.x, since those will then be no-ops.

Marked as reviewed by angorya (Reviewer).

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PR Review: https://git.openjdk.org/jfx/pull/1139#pullrequestreview-1427197226