Bump acorn from 8.0.5 to 8.6.0

Created by: dependabot[bot]

Bumps acorn from 8.0.5 to 8.6.0.

Commits

• 932591b Mark version 8.6.0
• 567c8e9 Fix of Fix: Propagation of forInit down to arrow functions
• 6dfc931 Fix bug in double-proto reporting
• 89e5e31 Remove outdated comment
• 8668505 Use official actions/setup-node@v2 in CI
• d451c2a Bump test262 dependency to latest
• 1c5e813 Upgrade Unicode dependency to @​unicode/unicode-14.0.0
• 27f01d6 Enable regexp-match-indices in test262
• d9caa9c Bump dev dependencies
• af4c012 Update CHANGELOG.md
• Additional commits viewable in compare view

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