chore(deps-dev): bump test262-harness from 6.5.0 to 6.6.0

[dependabot-preview[bot]]

Bumps test262-harness from 6.5.0 to 6.6.0.

Release notes

Sourced from test262-harness's releases.

v6.6.0

Commit	Message/Description
63597bc	6.6.0
859c476	Dependency: eshost@6.6.0
ad7c0be	Display hosts from eshost.supportedhosts

Commits

• 63597bc 6.6.0
• 859c476 Dependency: eshost@6.6.0
• ad7c0be Display hosts from eshost.supportedhosts
• See full diff in compare view

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[dependabot-preview[bot]]

Superseded by #518.