chore(deps): update dependency @vue/test-utils to v2.3.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@vue/test-utils	2.3.0 -> 2.3.1

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Release Notes

vuejs/test-utils

v2.3.1

Compare Source

What's Changed

• docs(fr): french documentation and README.md by @​antoinezanardi in https://github.com/vuejs/test-utils/pull/1975
• fix: Stub instance of the same component by @​freakzlike in https://github.com/vuejs/test-utils/pull/1979
• fix: return wrapper error from DOMWrapper ctor if element is nullish by @​ascott18 in https://github.com/vuejs/test-utils/pull/1996

New Contributors

• @​antoinezanardi made their first contribution in https://github.com/vuejs/test-utils/pull/1975
• @​ascott18 made their first contribution in https://github.com/vuejs/test-utils/pull/1996

Full Changelog: vuejs/test-utils@v2.3.0...v2.3.1

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