python3-lxml: upgrade 4.9.4 -> 45.0.0

python3-lxml: upgrade 4.9.4 -> 45.0.0

Changelog:
==========
-LP#1976304: The "Element.addnext()" method previously inserted the new element
 before existing tail text.  The tail text of both sibling elements now stays on
 the respective elements.
-LP#1980767, GH#379: "TreeBuilder.close()" could fail with a "TypeError" after
 parsing incorrect input.
-"Element.itertext(with_tail=False)" returned the tail text of comments and
 processing instructions, despite the explicit option.
-GH#370: A crash with recent libxml2 2.11.x versions was resolved.
-A compile problem with recent libxml2 2.12.x versions was resolved.
-The internal exception handling in C callbacks was improved for Cython 3.0.
-The exception declarations of "xmlInputReadCallback", "xmlInputCloseCallback",
-"xmlOutputWriteCallback" and "xmlOutputCloseCallback" in "tree.pxd" were
 corrected to prevent running Python code or calling into the C-API with a live
 exception set.
-GH#385: The long deprecated "unittest.makeSuite()" function is no longer used.
-LP#1522052: A file-system specific test is now optional and should no longer fail
 on systems that don't support it.
-GH#392: Some tests were adapted for libxml2 2.13.
-Contains all fixes from lxml 4.9.4.

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>