Set JavaFX verison in Gradle JavaFX plugin to 11.0.2 explicitly
Set JavaFX verison in Gradle JavaFX plugin to 11.0.2 explicitly

Previously the JavaFX plugin's built-in default version was used, which
can change between versions of the plugin.

bendisposto/prob2-ui,bendisposto/prob2-ui,bendisposto/prob2-ui,bendisposto/prob2-ui