docs: Update changelog for eCalc v13.0 with bug fixes #4199

Job	Run time
test-docs / build-docs	54s
ensure-code-quality / Build & Run Pre Commit hooks to verify code structure, quality etc. from pre-commit hooks	1m 22s
test-library / test-library (3.11, 1)	46s
test-library / test-library (3.12, 4)	44s
test-library / test-library (3.12, 5)	41s
test-library / test-library (3.13, 5)	37s
test-library / test-library (3.13, 3)	42s
test-library / test-library (3.11, 3)	48s
test-library / test-library (3.13, 2)	51s
test-library / test-library (3.12, 2)	53s
test-library / test-library (3.12, 1)	49s
test-library / test-library (3.11, 4)	45s
test-library / test-library (3.11, 2)	52s
test-library / test-library (3.11, 5)	37s
test-library / test-library (3.12, 3)	43s
test-library / test-library (3.13, 1)	45s
test-library / test-library (3.13, 4)	42s
	13m 31s

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