Pin dependencies

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@types/chai	devDependencies	pin	^4.1.2 -> 4.2.9
@types/chai-as-promised	devDependencies	pin	^7.1.0 -> 7.1.2
@types/mocha	devDependencies	pin	^5.0.0 -> 5.2.7
@types/node	devDependencies	pin	^9.6.5 -> 9.6.55
@types/request	devDependencies	pin	^2.47.0 -> 2.48.4
chai (source)	devDependencies	pin	^4.1.2 -> 4.2.0
chai-as-promised	devDependencies	pin	^7.1.1 -> 7.1.1
mocha (source)	devDependencies	pin	^5.1.0 -> 5.2.0
ts-node	devDependencies	pin	^5.0.1 -> 5.0.1
tslint (source)	devDependencies	pin	^5.9.1 -> 5.20.1
tslint-config-standard	devDependencies	pin	^7.0.0 -> 7.1.0
tslint-eslint-rules	devDependencies	pin	^5.1.0 -> 5.4.0
typedoc (source)	devDependencies	pin	^0.15.3 -> 0.15.8
typescript (source)	devDependencies	pin	^3.7.3 -> 3.8.2

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

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