Update to Unicode 15.0 #23

Job	Run time
Julia 1.6 - ubuntu-latest - x64 - push	45s
Julia 1.6 - ubuntu-latest - x86 - push	1m 0s
Julia 1.6 - macOS-latest - x64 - push	1m 46s
Julia 1.6 - windows-latest - x64 - push	11m 41s
Julia 1.6 - windows-latest - x86 - push	17m 58s
Julia 1.9 - ubuntu-latest - x64 - push	1m 19s
Julia 1.9 - ubuntu-latest - x86 - push	1m 21s
Julia 1.9 - macOS-latest - x64 - push	1m 29s
Julia 1.9 - windows-latest - x64 - push	2m 57s
Julia 1.9 - windows-latest - x86 - push	3m 12s
Julia nightly - ubuntu-latest - x64 - push	1m 40s
Julia nightly - ubuntu-latest - x86 - push	2m 17s
Julia nightly - macOS-latest - x64 - push	3m 2s
Julia nightly - windows-latest - x64 - push	4m 4s
Julia nightly - windows-latest - x86 - push	4m 34s
	59m 5s

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