build(deps): Bump @babel/runtime from 7.9.2 to 7.12.0

[koba04]

@babel/runtime 7.9.0 is not compatible with webpack v5, so we cannot bundle polished with webpack v5 due to the following error.

    error: Error: Can't resolve './construct' in '/repos/github.com/kufu/smarthr-ui/node_modules/polished/node_modules/@babel/runtime/helpers/esm'
    Did you mean 'construct.js'?
    BREAKING CHANGE: The request './construct' failed to resolve only because it was resolved as fully specified
    (probably because the origin is a '*.mjs' file or a '*.js' file where the package.json contains '"type": "module"').
    The extension in the request is mandatory for it to be fully specified.
    Add the extension to the request.

This is fixed at babel/babel#12058 (comment) and released as 7.12.0, so I've updated @babel/runtime to the version.

i18next/i18next#1513 is the same case.

[codecov]

Codecov Report

Merging #547 into main will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #547   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           88        88           
  Lines          831       831           
  Branches       305       305           
=========================================
  Hits           831       831           

Flag	Coverage Δ
#unittests	100.00% <ø> (ø)

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[bhough]

Thanks for putting this together @koba04. We will get this merged and released today.

[koba04]

@bhough Thank you for getting merged and released this!