Update sip to v6.9.0 #120

Job	Run time
Build wxPython documentation	49m 26s
build-source-dist	10m 29s
build-wheels (ubuntu-22.04, 3.9, x64)	23m 44s
build-wheels (ubuntu-22.04, 3.10, x64)	23m 42s
build-wheels (ubuntu-22.04, 3.11, x64)	23m 20s
build-wheels (ubuntu-22.04, 3.12, x64)	23m 22s
build-wheels (ubuntu-22.04, 3.13, x64)	23m 26s
build-wheels (windows-2022, 3.9, x86)	24m 34s
build-wheels (windows-2022, 3.9, x64)	22m 46s
build-wheels (windows-2022, 3.10, x86)	24m 48s
build-wheels (windows-2022, 3.10, x64)	21m 6s
build-wheels (windows-2022, 3.11, x86)	23m 26s
build-wheels (windows-2022, 3.11, x64)	21m 41s
build-wheels (windows-2022, 3.12, x86)	23m 9s
build-wheels (windows-2022, 3.12, x64)	21m 22s
build-wheels (windows-2022, 3.13, x86)	23m 52s
build-wheels (windows-2022, 3.13, x64)	23m 29s
build-wheels (macos-13, 3.9, x64)	35m 23s
build-wheels (macos-13, 3.10, x64)	36m 50s
build-wheels (macos-13, 3.11, x64)	33m 48s
build-wheels (macos-13, 3.12, x64)	43m 54s
build-wheels (macos-13, 3.13, x64)	35m 27s
Upload wheels to snapshot-builds on wxpython.org	1m 25s
Publish Python distribution to PyPI	0s
Create GitHub Release and upload source	0s
	9h 54m 29s

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