Bump xml from 0.8.20 to 1.2.0

[dependabot]

Bumps xml from 0.8.20 to 1.2.0.

Changelog

Sourced from xml's changelog.

Version 1.2

• Tolerate future XML versions in the XML prolog, as allowed by the XML 1.0 grammar
• doctype_ids() for additional DOCTYPE details

Version 1.1

• Events iterator can access the underlying EventReader.
• add_entities can be called after DOCTYPE to conditionally support XHTML, etc.
• Fixed parsing of namespaces prefixes starting with a non-ASCII char.

Version 1.0.0

• Added Doctype event
• Marked structs as #[non_exhaustive]
• Merged ParserConfig2 back into ParserConfig
• Added option to the writer to pass through XML markup unmodified
• xml-analyze binary has been moved to examples
• Writer escapes -- in comments and ]]> in CDATA

Version 0.8.27

• Added detection of invalid <? in attributes

Version 0.8.26

• Fixed buffering of files with a broken UTF-16 encoding

Version 0.8.25

• TryFrom for converting from reader to writer events, to make .as_writer_event() more discoverable.

Version 0.8.24

• Fixed reporting of line/column position of CDATA when trimming whitespace

Version 0.8.23

• StartDocument event will consistently use uppercase "UTF-8" name for encoding when the document did not declare it expicitly, but beware that documents can still use lowercase encoding names, so you must always use case-insensitive comparisons.

Version 0.8.22

• Ability to retrieve the whole DOCTYPE. For backwards compatibility, it's a getter on the reader, not an event.

Version 0.8.21

• Added EventWriter::inner_ref
• ~15% performance improvement

Commits

• 5ec715b Bump
• bd8fe07 Allow parsing of XML Version 1.x to improve conformance
• 18c4d62 Move assert_match macro
• 30227e8 Nicer comparison for OwnedName
• f0e34b3 Thinner string type
• aba9a85 Backwards-compatible DOCTYPE properties
• 7da7012 Provide name, public and system id in Doctype event
• 34458a2 Add as_str() method to XmlVersion enum.
• d997764 Release
• f4e33a4 Clarify name of prefix separator boolean
• Additional commits viewable in compare view

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