Update dependency bignumber.js to v9.1.2 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
bignumber.js	9.1.1 -> 9.1.2

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Release Notes

MikeMcl/bignumber.js (bignumber.js)

### [`v9.1.2`](https://togithub.com/MikeMcl/bignumber.js/blob/HEAD/CHANGELOG.md#912) [Compare Source](https://togithub.com/MikeMcl/bignumber.js/compare/v9.1.1...v9.1.2) - 28/08/23 - [#​354](https://togithub.com/MikeMcl/bignumber.js/issues/354) Amend `round` to avoid bug in v8 Maglev compiler. - \[BUGFIX] [#​344](https://togithub.com/MikeMcl/bignumber.js/issues/344) `minimum(0, -0)` should be `-0`.

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