Add support for PDFBOX 3.0

[tresf]

Switches the PDFBOX library from 2.x to 3.x

TODO:

• Regression testing
• Update workarounds for PDFBOX 3.x

@akberenz can you help me with the workaround? getContext() is null and it's expected to be passed in now.

tray/src/qz/printer/action/pdf/ParamPdfRenderer.java

Lines 41 to 44 in b8cab39

	// Note: These must match PdfFontPageDrawer's ignoreTransparency condition
	// TODO: These will throw NPE: Fix for PDFBOX 3.x
	addOperator(new OpaqueDrawObject(null));
	addOperator(new OpaqueGraphicStateParameters(null));