CMakeLists.txt: bump Whisper plugin to 2.0.0 #241

Job	Run time
Format (Source)	1m 4s
Format (VampPlugins)	9s
Format (Dependencies/Misc/Source)	32s
Doc	2m 46s
MacOS	15m 22s
Windows	10m 58s
Ubuntu	12m 7s
	42m 58s

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