Revert MSRV to 1.63.0 #10

Job	Run time
clippy	18s
fmt	16s
coverage	4m 5s
python3.9-arm64 macos-latest	3m 18s
python3.9-x64 ubuntu-latest	3m 5s
python3.9-x64 windows-latest	4m 17s
python3.9-x86 windows-latest	4m 6s
python3.10-arm64 macos-latest	3m 3s
python3.10-x64 ubuntu-latest	3m 3s
python3.10-x64 windows-latest	4m 0s
python3.10-x86 windows-latest	3m 42s
python3.11-arm64 macos-latest	3m 1s
python3.11-x64 ubuntu-latest	3m 10s
python3.11-x64 windows-latest	4m 21s
python3.11-x86 windows-latest	4m 11s
python3.12-arm64 macos-latest	3m 5s
python3.12-x64 ubuntu-latest	3m 6s
python3.12-x64 windows-latest	4m 23s
python3.12-x86 windows-latest	4m 6s
python3.13-arm64 macos-latest	3m 9s
python3.13-x64 ubuntu-latest	3m 20s
python3.13-x64 windows-latest	4m 58s
python3.13-x86 windows-latest	4m 40s
pythonpypy-3.9-arm64 macos-latest	37s
pythonpypy-3.9-x64 ubuntu-latest	27s
pythonpypy-3.9-x64 windows-latest	2m 9s
python3.10-x64 ubuntu-latest MSRV	1m 31s
python3.10-x64 ubuntu-latest nightly	2m 49s
	1h 26m 16s

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