Update dependency lints to v5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
lints (source)	dev_dependencies	major	^4.0.0 -> ^5.1.1

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Release Notes

dart-lang/core (lints)

v5.1.1

Compare Source

• Updated the SDK lower bound to 3.6.
• Move to dart-lang/core monorepo.

v5.1.0

Compare Source

• core:
  • added unintended_html_in_doc_comment (https://github.com/dart-lang/lints/issues/192)
• Updated the SDK lower bound to 3.6 (dev).

v5.0.0

Compare Source

• recommended:
  • added invalid_runtime_check_with_js_interop_types (https://github.com/dart-lang/lints/issues/188)
  • added unnecessary_library_name (https://github.com/dart-lang/lints/issues/181)
  • removed avoid_null_checks_in_equality_operators (https://github.com/dart-lang/lints/issues/200)
• Updated the SDK lower-bound to 3.5.

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