Prepare release 0.20.0 #1234

Job	Run time
CI / Fast / Format Check	22s
CI / Fast / Version	35s
CI / Slow / Generate Build Matrix / all_versions	29s
CI / Fast / Generate Build Matrix / python_versions	20s
CI / Slow / Integration-Tests (Python-3.9, Exasol-7.1.9)	22s
CI / Slow / Integration-Tests (Python-3.10, Exasol-7.1.9)	30s
CI / Slow / Integration-Tests (Python-3.11, Exasol-7.1.9)	28s
CI / Slow / Integration-Tests (Python-3.12, Exasol-7.1.9)	28s
CI / Slow / Integration-Tests (Python-3.13, Exasol-7.1.9)	43s
CI / Fast / Docs	29s
CI / Fast / Type Checking (Python-3.9)	33s
CI / Fast / Linting (Python-3.9)	37s
CI / Fast / Type Checking (Python-3.10)	32s
CI / Fast / Security Checks (Python-3.9)	22s
CI / Fast / Linting (Python-3.10)	41s
CI / Fast / Security Checks (Python-3.10)	25s
CI / Fast / Type Checking (Python-3.11)	26s
CI / Fast / Security Checks (Python-3.11)	22s
CI / Fast / Type Checking (Python-3.12)	30s
CI / Fast / Linting (Python-3.11)	31s
CI / Fast / Type Checking (Python-3.13)	41s
CI / Fast / Security Checks (Python-3.12)	20s
CI / Fast / Linting (Python-3.12)	32s
CI / Fast / Security Checks (Python-3.13)	32s
CI / Fast / Linting (Python-3.13)	42s
CI / Fast / Unit-Tests (Python-3.9)	25s
CI / Fast / Unit-Tests (Python-3.10)	27s
CI / Fast / Unit-Tests (Python-3.11)	20s
CI / Fast / Unit-Tests (Python-3.12)	28s
CI / Fast / Unit-Tests (Python-3.13)	30s
CI / Allow Merge	1s
Metrics / Report	39s
	15m 22s

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