Update dependency lxml to v5.3.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
lxml (source, changelog)	>=5.2.2 -> >=5.3.0
lxml (source, changelog)	==5.2.2 -> ==5.3.0

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Release Notes

lxml/lxml (lxml)

v5.3.0

Compare Source

==================

Features added

• GH#421: Nested CDATA sections are no longer rejected but split on output
  to represent ]]> correctly.
  Patch by Gertjan Klein.

Bugs fixed

• LP#2060160: Attribute values serialised differently in xmlfile.element() and xmlfile.write().

• LP#2058177: The ISO-Schematron implementation could fail on unknown prefixes.
  Patch by David Lakin.

Other changes

• LP#2067707: The strip_cdata option in HTMLParser() turned out to be useless and is now deprecated.

• Binary wheels use the library versions libxml2 2.12.9 and libxslt 1.1.42.

• Windows binary wheels use the library versions libxml2 2.11.8 and libxslt 1.1.39.

• Built with Cython 3.0.11.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.64%. Comparing base (feca995) to head (d1e7a12).
Report is 1 commits behind head on master.

Additional details and impacted files

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  Coverage   99.64%   99.64%           
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  Files           4        4           
  Lines         279      279           
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  Hits          278      278           
  Misses          1        1