deps: update lxml requirement from >=4.9.0 to >=4.9.4

[dependabot]

Updates the requirements on lxml to permit the latest version.

Changelog

Sourced from lxml's changelog.

4.9.4 (2023-12-19)

Bugs fixed

• LP#2046398: Inserting/replacing an ancestor into a node's children could loop indefinitely.

• LP#1980767, GH#379: TreeBuilder.close() could fail with a TypeError after parsing incorrect input. Original patch by Enrico Minack.

• LP#1522052: A file-system specific test is now optional and should no longer fail on systems that don't support it.

Other changes

• Wheels include zlib 1.3, libxml2 2.10.3 and libxslt 1.1.39 (zlib 1.2.12, libxml2 2.10.3 and libxslt 1.1.37 on Windows).

• Built with Cython 0.29.37.

4.9.3 (2023-07-05)

Bugs fixed

• LP#2008911: lxml.objectify accepted non-decimal numbers like ²²² as integers.

• A memory leak in lxml.html.clean was resolved by switching to Cython 0.29.34+.

• GH#348: URL checking in the HTML cleaner was improved. Patch by Tim McCormack.

• GH#371, GH#373: Some regex strings were changed to raw strings to fix Python warnings. Patches by Jakub Wilk and Anthony Sottile.

Other changes

• Wheels include zlib 1.2.13, libxml2 2.10.3 and libxslt 1.1.38 (zlib 1.2.12, libxml2 2.10.3 and libxslt 1.1.37 on Windows).

• Built with Cython 0.29.36 to adapt to changes in Python 3.12.

4.9.2 (2022-12-13)

... (truncated)

Commits

• d7f33d6 Prepare release of 4.9.4.
• e6fa03e Update changelog.
• 64b1c37 Use latest Cython release for wheels (0.29.36 crashes at shutdown).
• 64a39c4 Use latest libxslt 1.1.39 in wheels.
• 33c9c0e CI: Make sure we find Py2.7 on macOS.
• 5585faf CI: Disable Py3.6 with system libraries since we cannot install a matching ve...
• 187e81b CI: Install system libraries only if STATIC_DEPS=false.
• 9c59c7d CI: Fix "pip" usage in Py2.7.
• 6cb3381 CI: Use ubuntu-22.04 in the lxml-4.9 branch due to the library dependencies.
• 02e7a31 CI: Explicitly call "python2" instead of "python" in macOS-Py2 job.
• Additional commits viewable in compare view

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