chore: update dependency js-yaml to ^5.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
js-yaml	^5.3.0 → ^5.4.0

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Release Notes

nodeca/js-yaml (js-yaml)

v5.4.0

Compare Source

Added

• Added the scalarStyleRules dumper option to customize string formatting.
  See Scalar styling for details.

Changed

• [breaking] Flattened the low-level AST node style representation. Scalar
  and collection nodes now use SCALAR_STYLE and COLLECTION_STYLE values;
  explicit tags use the separate tagged property. Alias nodes now contain
  only kind and anchor. This only affects code that directly constructs or
  edits AST nodes.
• [breaking] The sortKeys option was rewritten using AST mutation to avoid
  side effects.
• Reworked scalar style selection. This can change formatting without changing
  loaded values; in particular, whitespace-only strings are now double-quoted.

Fixed

• Accept a byte order mark at the start of each document in a stream, #​791.
• Produce valid flow mappings with quoteFlowKeys and flowSkipColonSpace,
  including alias and property-only keys, #​786.
• Preserve empty scalar items when converting block sequences to flow style.
• Do not apply the 1024-character simple-key limit to flow mapping keys.
• Count Unicode code points, rather than UTF-16 code units, for the
  1024-character simple-key limit.
• Add an explicit document-end marker after keep-chomped block scalars when
  needed to preserve trailing newlines.

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