dependency: bump bootsnap from 1.7.7 to 1.8.1

Bumps bootsnap from 1.7.7 to 1.8.1.

Changelog

Sourced from bootsnap's changelog.

1.8.1

• Fixed support for older Psych. (#369)

1.8.0

• Improve support for Pysch 4. (#368)

Commits

• d321735 Release 1.8.1
• e5f2de8 Merge pull request #369 from ahorek/psych4
• b13dfc9 psych < 4 fix
• 4f65261 Release 1.8.0
• f7bacf0 Merge pull request #368 from Shopify/yaml-unsafe-load-file
• 1d14e25 Fix Psych 4 compatibility and add caching for YAML.unsafe_load_file
• See full diff in compare view

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