Bump version 0.20.0b6 #2068

Job	Run time
Running code style checks	46s
Running documentation style checks	13s
Building library documentation (public-ubuntu-latest-8-cores)	1h 22m 8s
Build wheelhouse for Python versions (ubuntu-latest, 3.10, true)	36s
Build wheelhouse for Python versions (ubuntu-latest, 3.11, true)	36s
Build wheelhouse for Python versions (ubuntu-latest, 3.12, true)	40s
Build wheelhouse for Python versions (windows-latest, 3.10, true)	1m 43s
Build wheelhouse for Python versions (windows-latest, 3.11, true)	1m 40s
Build wheelhouse for Python versions (windows-latest, 3.12, true)	2m 18s
Build wheelhouse for Python versions (macos-latest, 3.10, true)	1m 9s
Build wheelhouse for Python versions (macos-latest, 3.11, true)	44s
Build wheelhouse for Python versions (macos-latest, 3.12, true)	58s
Testing library with different operating systems and Python versions (ubuntu-latest, 3.10)	1m 4s
Testing library with different operating systems and Python versions (ubuntu-latest, 3.11)	56s
Testing library with different operating systems and Python versions (ubuntu-latest, 3.12)	1m 6s
Testing library with different operating systems and Python versions (windows-latest, 3.10)	1m 31s
Testing library with different operating systems and Python versions (windows-latest, 3.11)	1m 32s
Testing library with different operating systems and Python versions (windows-latest, 3.12)	1m 28s
Build library artifacts	18s
Deploy developers documentation	34s
Release project	45s
Upload release documentation	3s
	1h 42m 48s

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