Pin dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
chai (source)	devDependencies	pin	^4.3.4 -> 4.3.4
eslint (source)	devDependencies	pin	^8.0.1 -> 8.0.1
import-from	devDependencies	pin	^3.0.0 -> 3.0.0
mocha (source)	devDependencies	pin	^8.4.0 -> 8.4.0
nyc (source)	devDependencies	pin	^15.1.0 -> 15.1.0

📌 Important: Renovate will wait until you have merged this Pin PR before creating any upgrade PRs for the affected packages. Add the preset :preserveSemverRanges to your config if you instead don't wish to pin dependencies.

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