Update dependency jsonfile to v6 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
jsonfile	^5.0.0 -> ^6.0.0

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Release Notes

jprichardson/node-jsonfile

### [`v6.1.0`](https://togithub.com/jprichardson/node-jsonfile/blob/master/CHANGELOG.md#​610--2020-10-31) [Compare Source](https://togithub.com/jprichardson/node-jsonfile/compare/6.0.1...6.1.0) - Add `finalEOL` option to disable writing final EOL ([#​115](https://togithub.com/jprichardson/node-jsonfile/issues/115), [#​137](https://togithub.com/jprichardson/node-jsonfile/pull/137)) - Update dependency ([#​138](https://togithub.com/jprichardson/node-jsonfile/pull/138)) ### [`v6.0.1`](https://togithub.com/jprichardson/node-jsonfile/blob/master/CHANGELOG.md#​601--2020-03-07) [Compare Source](https://togithub.com/jprichardson/node-jsonfile/compare/6.0.0...6.0.1) - Update dependency ([#​130](https://togithub.com/jprichardson/node-jsonfile/pull/130)) - Fix code style ([#​129](https://togithub.com/jprichardson/node-jsonfile/pull/129)) ### [`v6.0.0`](https://togithub.com/jprichardson/node-jsonfile/blob/master/CHANGELOG.md#​600--2020-02-24) [Compare Source](https://togithub.com/jprichardson/node-jsonfile/compare/5.0.0...6.0.0) - **BREAKING:** Drop support for Node 6 & 8 ([#​128](https://togithub.com/jprichardson/node-jsonfile/pull/128)) - **BREAKING:** Do not allow passing `null` as options to `readFile()` or `writeFile()` ([#​128](https://togithub.com/jprichardson/node-jsonfile/pull/128)) - Refactor internals ([#​128](https://togithub.com/jprichardson/node-jsonfile/pull/128))

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