build(deps): bump js-yaml from 4.3.1 to 5.2.3

[dependabot]

Bumps js-yaml from 4.3.1 to 5.2.3.

Changelog

Sourced from js-yaml's changelog.

[5.2.3] - 2026-08-01

Fixed

• Prevent prototype fallback when resolving tags and mapping entries, #782.
• Resolve !!timestamp years 0000-0099 correctly, #775.
• Preserve implicit null mapping values before document markers and reject unpaired mapping event streams, #784.
• Preserve folded scalar values with tab-indented lines when round-tripping a parsed AST through present(); dump() and loading are unaffected, #780.

[5.2.2] - 2026-07-24

Fixed

• Quote flow scalars where a colon precedes a flow indicator, #773.

Security

• Avoid exponential parsing time for nested flow sequence pairs.

[5.2.1] - 2026-07-02

Fixed

• Add Map support to !!omap (should work when realMapTag used)

Security

• Remove quadratic complexity from !!omap addItem. Regression from v5 (usually not critical, because YAML11_SCHEMA is not default anymore).

4.3.0, 3.15.0 - 2026-06-27

Security

• Backported maxTotalMergeKeys option.

[5.2.0] - 2026-06-26

Added

• Added maxTotalMergeKeys (10000) loader option to limit the total number of keys processed by YAML merge (<<) across one load() / loadAll() call.
• Added maxAliases (-1) loader option to limit the number of YAML aliases per document.

Removed

• maxMergeSeqLength replaced with maxTotalMergeKeys for limiting YAML merge processing.

Fixed

• Round-trip of integers with exponential form (>= 1e21)

[5.1.0] - 2026-06-23

... (truncated)

Commits

• 6740445 5.2.3 released
• 94e766d Update changelog
• c3bd7ca Polish previous commit, #780
• 00209b6 presenter: treat a tab-indented line in a folded scalar as more-indented (#780)
• 40fcb4f Fix missing mapping values before document markers and reject unpaired mappin...
• 49280f3 Fix !!timestamp resolution for years 0000-0099, #775
• 355dc96 fix: prevent prototype fallback in tag and harden object lookups, #782 (than...
• d524f83 docs: add contributing guidelines
• 3c29559 5.2.2 released
• 3e5240f parser: avoid reparsing flow sequence pair keys
• Additional commits viewable in compare view

[reesebuilt]

Superseded by #17, which takes js-yaml 5.2.3 with the guards this upgrade needs rather than the version bump alone.

Policy files are YAML and are attacker-adjacent input, so the upgrade was reviewed with a differential probe across the API surface this repo actually calls. Two operator-visible behaviour changes needed handling: an unparseable policy file must leave the previous ruleset in force, and an unparseable agent-harness config must degrade one dashboard panel rather than the dashboard. Both are now covered by tests. The version is also pinned exactly rather than by range, and @types/js-yaml is dropped because 5.x ships its own types.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.