Update beautifulsoup4 to 4.12.3

[pyup-bot]

This PR updates beautifulsoup4 from 4.10.0 to 4.12.3.

Changelog

4.11.1

This release was done to ensure that the unit tests are packaged along
with the released source. There are no functionality changes in this
release, but there are a few other packaging changes:

* The Japanese and Korean translations of the documentation are included.
* The changelog is now packaged as CHANGELOG, and the license file is
packaged as LICENSE. NEWS.txt and COPYING.txt are still present,
but may be removed in the future.
* TODO.txt is no longer packaged, since a TODO is not relevant for released
code.

4.11.0

* Ported unit tests to use pytest.

* Added special string classes, RubyParenthesisString and RubyTextString,
to make it possible to treat ruby text specially in get_text() calls.
[bug=1941980]

* It's now possible to customize the way output is indented by
providing a value for the 'indent' argument to the Formatter
constructor. The 'indent' argument works very similarly to the
argument of the same name in the Python standard library's
json.dump() function. [bug=1955497]

* If the charset-normalizer Python module
(https://pypi.org/project/charset-normalizer/) is installed, Beautiful
Soup will use it to detect the character sets of incoming documents.
This is also the module used by newer versions of the Requests library.
For the sake of backwards compatibility, chardet and cchardet both take
precedence if installed. [bug=1955346]

* Added a workaround for an lxml bug
(https://bugs.launchpad.net/lxml/+bug/1948551) that causes
problems when parsing a Unicode string beginning with BYTE ORDER MARK.
[bug=1947768]

* Issue a warning when an HTML parser is used to parse a document that
looks like XML but not XHTML. [bug=1939121]

* Do a better job of keeping track of namespaces as an XML document is
parsed, so that CSS selectors that use namespaces will do the right
thing more often. [bug=1946243]

* Some time ago, the misleadingly named "text" argument to find-type
methods was renamed to the more accurate "string." But this supposed
"renaming" didn't make it into important places like the method
signatures or the docstrings. That's corrected in this
version. "text" still works, but will give a DeprecationWarning.
[bug=1947038]

* Fixed a crash when pickling a BeautifulSoup object that has no
tree builder. [bug=1934003]

* Fixed a crash when overriding multi_valued_attributes and using the
html5lib parser. [bug=1948488]

* Standardized the wording of the MarkupResemblesLocatorWarning
warnings to omit untrusted input and make the warnings less
judgmental about what you ought to be doing. [bug=1955450]

* Removed support for the iconv_codec library, which doesn't seem
to exist anymore and was never put up on PyPI. (The closest
replacement on PyPI, iconv_codecs, is GPL-licensed, so we can't use
it--it's also quite old.)

Links

• PyPI: https://pypi.org/project/beautifulsoup4
• Changelog: https://data.safetycli.com/changelogs/beautifulsoup4/