chore(deps): update istanbul-lib-source-maps to v5

[AriPerkkio]

Description

• Ref. fix: replace source-map with @jridgewell/trace-mapping istanbuljs/istanbuljs#743
• https://github.com/istanbuljs/istanbuljs/releases

Drops transitive dependency on source-map by replacing it with @jridgewell/trace-mapping:

trace-mapping is faster, smaller, and lighter than the source-map package, and doesn't require WASM, manual memory management, or async/await to use.

istanbuljs/v8-to-istanbul#186 (comment)

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