Pin dependencies

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
@​types/atom	devDependencies	pin	^1.36.0 -> 1.36.0	source
@​types/chai	devDependencies	pin	^4.1.7 -> 4.1.7	source
@​types/mocha	devDependencies	pin	^5.2.6 -> 5.2.6	source
@​types/open	devDependencies	pin	^6.1.0 -> 6.1.0	source
atom-ts-spec-runner	devDependencies	pin	^1.1.1 -> 1.1.1	source
chai	devDependencies	pin	^4.2.0 -> 4.2.0	homepage, source
tslint	devDependencies	pin	^5.16.0 -> 5.16.0	homepage, source
typescript	devDependencies	pin	^3.4.3 -> 3.4.3	homepage, source

: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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