Update release notes for the v0.18.1 release (#225) #546

Job	Run time
Build distribution packages	20s
Test with nox (arm, ubuntu-24.04, 3.11, ci_checks_max)	1m 6s
Test with nox (arm, ubuntu-24.04, 3.11, pytest_min)	52s
Test with nox (arm, ubuntu-24.04, 3.12, ci_checks_max)	1m 11s
Test with nox (amd64, ubuntu-24.04, 3.12, pytest_min)	38s
Test with nox (amd64, ubuntu-24.04, 3.12, ci_checks_max)	1m 6s
Test with nox (arm, ubuntu-24.04, 3.12, pytest_min)	43s
Test with nox (amd64, ubuntu-24.04, 3.11, pytest_min)	31s
Test with nox (amd64, ubuntu-24.04, 3.11, ci_checks_max)	1m 4s
Test documentation website generation	0s
Test package installation (arm, ubuntu-24.04, 3.11)	35s
Test package installation (amd64, ubuntu-24.04, 3.12)	17s
Test package installation (amd64, ubuntu-24.04, 3.11)	19s
Test package installation (arm, ubuntu-24.04, 3.12)	21s
Test with nox	2s
Test package installation	4s
Publish documentation website to GitHub pages	40s
Create GitHub release	0s
Publish packages to PyPI	0s
	9m 49s

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