build: update dependency nyc to v18

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
nyc (source)	15.1.0 → 18.0.0

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Release Notes

istanbuljs/nyc (nyc)

v18.0.0

Compare Source

⚠ BREAKING CHANGES

• deps: transitive dependencies now require node 20 || >=22.

Bug Fixes

• deps: update dependencies pulling in old glob (#​1612) (0707729)

v17.1.0

Compare Source

Features

• deps: bump foreground-child from ^2.0.0 to ^3.0.0 (#​1546) (af74d1e)

Bug Fixes

• reduce size of serialized JSON output (#​1570) (ae657b6)

v17.0.0

Compare Source

⚠ BREAKING CHANGES

• minimum Node version now 18

Bug Fixes

• deps: address security alerts in deps (#​1555) (b6ed598)

Build System

• minimum Node version now 18 (9ef340e)

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