Update dependency markdownlint-cli to ^0.48.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
markdownlint-cli	^0.45.0 → ^0.48.0

Test plan: CI should pass with updated dependencies. No review required: this is an automated dependency update PR.

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Release Notes

igorshubovych/markdownlint-cli (markdownlint-cli)

v0.48.0

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• Update all dependencies via Dependabot

v0.47.0

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• Add output and exit code support for warnings
• Update markdownlint dependency to 0.40.0
  • Improve MD011/MD013/MD051/MD060
• Update all dependencies via Dependabot

v0.46.0

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• Replace glob dependency with tinyglobby (smaller and fewer dependencies)
• Update markdownlint dependency to 0.39.0
  • Add MD060/table-column-style
  • Improve MD001/MD007/MD009/MD010/MD029/MD033/MD037/MD059
• Update all dependencies via Dependabot

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