Bump version to 0.18.1 #979

Job	Run time
Clippy	24s
Check	24s
Rustfmt	6s
spellcheck	9s
Test Suite (ubuntu-latest, 1.67.0, 0.10.1)	15m 45s
Test Suite (ubuntu-latest, 1.67.0, 0.11.0)	15m 55s
Test Suite (ubuntu-latest, stable, 0.10.1)	12m 58s
Test Suite (ubuntu-latest, stable, 0.11.0)	12m 29s
Test Suite (ubuntu-latest, stable, master)	2m 37s
Test Suite (ubuntu-latest, nightly, 0.10.1)	11m 29s
Test Suite (ubuntu-latest, nightly, 0.11.0)	11m 28s
Test Suite (ubuntu-latest, nightly, master)	2m 36s
Test Suite (macos-13, 1.67.0, 0.10.1)	21m 50s
Test Suite (macos-13, 1.67.0, 0.11.0)	24m 30s
Test Suite (macos-13, stable, 0.10.1)	17m 28s
Test Suite (macos-13, stable, 0.11.0)	15m 8s
Test Suite (macos-13, stable, master)	3m 57s
Test Suite (macos-13, nightly, 0.10.1)	19m 58s
Test Suite (macos-13, nightly, 0.11.0)	16m 1s
Test Suite (macos-13, nightly, master)	4m 41s
Test Suite (windows-latest, 1.67.0, 0.10.1)	19m 20s
Test Suite (windows-latest, 1.67.0, 0.11.0)	20m 4s
Test Suite (windows-latest, stable, 0.10.1)	15m 54s
Test Suite (windows-latest, stable, 0.11.0)	13m 24s
Test Suite (windows-latest, stable, master)	7m 18s
Test Suite (windows-latest, nightly, 0.10.1)	18m 11s
Test Suite (windows-latest, nightly, 0.11.0)	17m 32s
Test Suite (windows-latest, nightly, master)	7m 37s
	5h 29m 13s

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