Update dependency node-fetch to v2.7.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
node-fetch	2.6.12 -> 2.7.0

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Release Notes

node-fetch/node-fetch (node-fetch)

### [`v2.7.0`](https://togithub.com/node-fetch/node-fetch/releases/tag/v2.7.0) [Compare Source](https://togithub.com/node-fetch/node-fetch/compare/v2.6.13...v2.7.0) ##### Features - `AbortError` ([#​1744](https://togithub.com/bitinn/node-fetch/issues/1744)) ([9b9d458](https://togithub.com/bitinn/node-fetch/commit/9b9d45881e5ca68757077726b3c0ecf8fdca1f29)) ### [`v2.6.13`](https://togithub.com/node-fetch/node-fetch/releases/tag/v2.6.13) [Compare Source](https://togithub.com/node-fetch/node-fetch/compare/v2.6.12...v2.6.13) ##### Bug Fixes - Remove the default connection close header ([#​1765](https://togithub.com/bitinn/node-fetch/issues/1765)) ([65ae25a](https://togithub.com/bitinn/node-fetch/commit/65ae25a1da2834b046c218685f2085a06f679492)), closes [#​1735](https://togithub.com/bitinn/node-fetch/issues/1735) [#​1473](https://togithub.com/bitinn/node-fetch/issues/1473) [#​1736](https://togithub.com/bitinn/node-fetch/issues/1736)

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