Bump lxml from 5.4.0 to 6.0.0 #1694

Job	Run time
CI / Fast / Version	25s
CI / Fast / Generate Build Matrix / python_versions	31s
CI / Fast / Changelog Update Check	25s
CI / Fast / Format Check	28s
CI / Slow / Generate Build Matrix / all_versions	27s
CI / Fast / Docs	2m 30s
CI / Slow / Integration-Tests (Python-3.13, Exasol-7.1.9)	59s
CI / Slow / Integration-Tests (Python-3.11, Exasol-7.1.9)	54s
CI / Slow / Integration-Tests (Python-3.9, Exasol-7.1.9)	54s
CI / Slow / Integration-Tests (Python-3.10, Exasol-7.1.9)	48s
CI / Slow / Integration-Tests (Python-3.12, Exasol-7.1.9)	54s
CI / Fast / Linting (Python-3.11)	36s
CI / Fast / Type Checking (Python-3.10)	35s
CI / Fast / Security Checks (Python-3.10)	20s
CI / Fast / Linting (Python-3.9)	37s
CI / Fast / Security Checks (Python-3.13)	29s
CI / Fast / Security Checks (Python-3.12)	27s
CI / Fast / Linting (Python-3.12)	37s
CI / Fast / Type Checking (Python-3.9)	36s
CI / Fast / Linting (Python-3.13)	39s
CI / Fast / Linting (Python-3.10)	33s
CI / Fast / Type Checking (Python-3.13)	36s
CI / Fast / Security Checks (Python-3.11)	28s
CI / Fast / Security Checks (Python-3.9)	28s
CI / Fast / Type Checking (Python-3.12)	41s
CI / Fast / Type Checking (Python-3.11)	35s
CI / Fast / Unit-Tests (Python-3.9)	42s
CI / Fast / Unit-Tests (Python-3.10)	42s
CI / Fast / Unit-Tests (Python-3.11)	37s
CI / Fast / Unit-Tests (Python-3.13)	36s
CI / Fast / Unit-Tests (Python-3.12)	40s
CI / Allow Merge	3s
Metrics / Report	28s
	21m 20s

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