chore(deps): Bump the xml group in /packages/smithy/smithy with 1 update

[dependabot]

Bumps the xml group in /packages/smithy/smithy with 1 update: xml.

Updates xml from 6.3.0 to 6.5.0

Changelog

Sourced from xml's changelog.

6.5.0

• Add support for most XPath 1.0 functions, including set-operations and ensuring document order for node-sets.
• Add support for XPath expression evaluation, user-defined variables, and user-defined functions.
• Add XmlNode.xpathGenerate to create a readable XPath for all nodes.
• Add support for node comparison: XmlNode.isEqualNode and XmlNode.compareNodePosition.

6.4.0

• Dart 3.0 and PetitParser 6.0 requirement.
• Add RSS feed reader example.

Commits

• 83796f3 Ready for 6.5.0
• bc00451 Improve comments for XPath context.
• 83d07b4 Remove entity and notation events, not coming for 6.5.0.
• ec05121 Update changelog for 6.5.0.
• 7b1a02e Remove dead code.
• 17eb00a Dart 3.2 requirement.
• e53b7c2 Add events code for entity and notation events.
• 56b66d1 Remove unnecessary type declaration.
• e3f2e04 Add ENTITY and NOTATION to XmlNodeType.
• 1040595 Add entitymapping tests.
• Additional commits viewable in compare view

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[dependabot]

Looks like xml is up-to-date now, so this is no longer needed.