Update Changelog for Release v.4.3.0 #601

Job	Run time
format	31s
static-code-analysis	48s
build	35s
docs	1m 45s
test (ubuntu-latest, false, 3.8)	3m 3s
test (ubuntu-latest, false, 3.9)	3m 8s
test (ubuntu-latest, false, 3.10)	2m 50s
test (ubuntu-latest, false, 3.11)	3m 8s
test (ubuntu-latest, false, 3.12)	4m 3s
test (ubuntu-latest, false, pypy-3.8)	3m 47s
test (ubuntu-latest, false, pypy-3.9)	4m 30s
test (macos-latest, false, 3.8)	2m 32s
test (macos-latest, false, 3.9)	2m 29s
test (macos-latest, false, 3.10)	2m 13s
test (macos-latest, false, 3.11)	4m 9s
test (macos-latest, false, 3.12)	3m 35s
test (macos-latest, false, pypy-3.8)	3m 38s
test (macos-latest, false, pypy-3.9)	3m 47s
test (windows-latest, false, 3.8)	2m 26s
test (windows-latest, false, 3.9)	2m 45s
test (windows-latest, false, 3.10)	2m 34s
test (windows-latest, false, 3.11)	2m 39s
test (windows-latest, false, 3.12)	6m 17s
test (windows-latest, false, pypy-3.8)	7m 10s
test (windows-latest, false, pypy-3.9)	6m 46s
upload_pypi	0s
coveralls	7s
	1h 21m 15s

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