Bump log from 0.4.20 to 0.4.21 #4303

Job	Run time
Check for upstream trigger phrase	2s
Test importing with bare requirements	12m 3s
Build & Test (ubuntu-latest, python: 3.9, distributed: false)	8m 12s
Build & Test (ubuntu-latest, python: 3.10, distributed: false)	8m 38s
Build & Test (ubuntu-latest, python: 3.11, distributed: false)	8m 34s
Build & Test (ubuntu-latest, python: 3.12, distributed: false)	1m 0s
Build & Test (windows-latest, python: 3.9, distributed: false)	16m 4s
Build & Test (windows-latest, python: 3.10, distributed: false)	16m 22s
Build & Test (windows-latest, python: 3.11, distributed: false)	17m 33s
Build & Test (windows-latest, python: 3.12, distributed: false)	1m 47s
Build & Test (macos-latest, python: 3.9, distributed: false)	12m 37s
Build & Test (macos-latest, python: 3.10, distributed: false)	14m 53s
Build & Test (macos-latest, python: 3.11, distributed: false)	18m 57s
Build & Test (macos-latest, python: 3.12, distributed: false)	1m 28s
Build & Test (ubuntu-latest, python: 3.9, distributed: true)	9m 25s
Build & Test (ubuntu-latest, python: 3.11, distributed: true)	9m 12s
	2h 36m 47s

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