Bump version to 1.2.1 #428

Job	Run time
Build sdist	1m 13s
Check Format	45s
Build wheels on ubuntu-latest for x86_64	2m 8s
Documentation	8m 41s
Build wheels on ubuntu-latest for x86_64	2m 31s
Run tests [g++]	4m 12s
Build wheels on ubuntu-latest for x86_64	2m 9s
Build wheels on windows-latest for auto64	4m 35s
Build wheels on windows-latest for auto64	3m 50s
Build wheels on windows-latest for auto64	4m 32s
Build wheels on macos-12 for x86_64	3m 59s
Build wheels on macos-12 for x86_64	3m 32s
Build wheels on macos-12 for x86_64	2m 13s
Build wheels on macos-12 for arm64	4m 37s
Build wheels on macos-12 for arm64	3m 54s
Build wheels on macos-12 for arm64	3m 37s
Test sdist install	5m 25s
Test wheel on ubuntu-latest with Python 3.10	28s
Test wheel on ubuntu-latest with Python 3.11	40s
Test wheel on ubuntu-latest with Python 3.12	47s
Test wheel on windows-latest with Python 3.10	44s
Test wheel on windows-latest with Python 3.11	57s
Test wheel on windows-latest with Python 3.12	46s
Test wheel on macos-12 with Python 3.10	1m 0s
Test wheel on macos-12 with Python 3.11	57s
Test wheel on macos-12 with Python 3.12	1m 4s
Test wheel on macos-14 with Python 3.10	45s
Test wheel on macos-14 with Python 3.11	30s
Test wheel on macos-14 with Python 3.12	36s
Publish to PyPI	0s
Publish docs versions JSON	0s
	1h 11m 7s

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