[Snyk] Security upgrade fast-xml-parser from 4.5.3 to 5.3.4

[randi274]

Snyk has created this PR to fix 1 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• packages/salesforcedx-vscode-core/package.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Uncaught Exception SNYK-JS-FASTXMLPARSER-15155603	828

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[randi274]

This major version upgrade transitions fast-xml-parser to an ECMAScript module (ESM) package. While the official changelog states there are no functional API or syntax changes, this shift can be a breaking change for projects using CommonJS (require()). [5, 7]

Source: Package documentation
Recommendation: Verify that your project's import method for this package still works. If using CommonJS, you may need to switch to a dynamic import() or adjust your build configuration to ensure correct module resolution.

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