Update Changelog for Release v.4.3.0 #602

Job	Run time
format	22s
docs	1m 26s
build	27s
static-code-analysis	46s
test (ubuntu-latest, false, 3.8)	2m 57s
test (ubuntu-latest, false, 3.9)	2m 48s
test (ubuntu-latest, false, 3.10)	3m 19s
test (ubuntu-latest, false, 3.11)	2m 52s
test (ubuntu-latest, false, 3.12)	4m 2s
test (ubuntu-latest, false, pypy-3.8)	3m 24s
test (ubuntu-latest, false, pypy-3.9)	4m 9s
test (macos-latest, false, 3.8)	1m 45s
test (macos-latest, false, 3.9)	2m 37s
test (macos-latest, false, 3.10)	2m 42s
test (macos-latest, false, 3.11)	3m 38s
test (macos-latest, false, 3.12)	3m 52s
test (macos-latest, false, pypy-3.8)	6m 0s
test (macos-latest, false, pypy-3.9)	4m 10s
test (windows-latest, false, 3.8)	3m 3s
test (windows-latest, false, 3.9)	2m 14s
test (windows-latest, false, 3.10)	2m 49s
test (windows-latest, false, 3.11)	2m 38s
test (windows-latest, false, 3.12)	5m 14s
test (windows-latest, false, pypy-3.8)	7m 26s
test (windows-latest, false, pypy-3.9)	7m 20s
upload_pypi	0s
coveralls	9s
	1h 22m 9s

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