[jfx15] RFR: 8255042: Change JavaFX release version in jfx15 branch to 15.0.1

[Kevin Rushforth]

On Tue, 20 Oct 2020 08:12:41 GMT, Johan Vos <jvos at openjdk.org> wrote:

> Increase release version to 15.0.1
> Fix for JDK-8255042

Marked as reviewed by kcr (Lead).

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PR: https://git.openjdk.java.net/jfx/pull/325