Update dependency nodegit to ^0.27.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
nodegit (source)	^0.26.5 -> ^0.27.0
@types/nodegit	^0.26.2 -> ^0.27.0

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Release Notes

nodegit/nodegit

v0.27.0

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Full Changelog

Summary of changes

• Expose git_remote_rename
• Bump OpenSSL from 1.1.0i -> 1.1.1c in Windows/Mac OS Electron builds
• Replace unmaintained request library with got
• Remove promisify-node and use vanilla promises for all NodeGit promises
• Prebuilds for Node 14, deprecate Node 8
• Persist RemoteCallbacks and ProxyOptions on the remote if using Remote.prototype.connect. This fixes a segfault when using any routines on a connected remote.

####Merged PRs into NodeGit

• Upgrade build environments #​1785
• Remote needs to persist the callback/proxyOpts/headers #​1784
• Remove promisify-node and remove old callback api remnants
• Replace deprecated package request with got
• Bump OpenSSL prebuilt to 1.1.1c
• Expose git_remote_rename
• Dedupe Remote.prototype.fetch

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