scenerygraphics/scenery: scenery 0.2.3

Volume: support loading of volumetric data from volume graphics files (via SCIFIO) FXSwapchain/OpenGLRenderer/SceneryPanel: bug fixes and performance improvements for JavaFX integration (thanks @hanslovsky!) VulkanRenderer: fixes race condition in Node initialisation VulkanRenderer: better caching of pre-recorded command buffers PointCloud: fixes bounding box discovery Line: reintroduces custom shaders for line rendering OpenGLRenderer: fix concurrency issues when updating textures dependency updates: bumps Kotlin to 1.1.61 bumps spirvcrossj to 0.3.1, fixes native library discovery issues when running from within Fiji/Image