fix(deps): bn@1.0.5

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
bn	dependencies	patch	^1.0.1 -> ^1.0.5

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Release Notes

keybase/bn

### [`v1.0.5`](https://togithub.com/keybase/bn/blob/master/CHANGELOG.md#​105-2019-09-24) [Compare Source](https://togithub.com/keybase/bn/compare/v1.0.4...v1.0.5) - Fix bug for Webpack ### [`v1.0.4`](https://togithub.com/keybase/bn/blob/master/CHANGELOG.md#​104-2019-07-31) [Compare Source](https://togithub.com/keybase/bn/compare/v1.0.3...v1.0.4) - Update deps to fix bad lodash ### [`v1.0.3`](https://togithub.com/keybase/bn/blob/master/CHANGELOG.md#​103-2019-02-19) [Compare Source](https://togithub.com/keybase/bn/compare/v1.0.2...v1.0.3) - Fix dev deps found via audit ### [`v1.0.2`](https://togithub.com/keybase/bn/blob/master/CHANGELOG.md#​102-2019-02-01) [Compare Source](https://togithub.com/keybase/bn/compare/v1.0.1...v1.0.2) - migrate (new Buffer) -> Buffer.from or Buffer.alloc

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[github-actions[bot]]

:tada: This PR is included in version 1.0.7 :tada:

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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