Update dependency y18n to 4.0.1 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change
y18n	4.0.0 -> 4.0.1

GitHub Vulnerability Alerts

CVE-2020-7774

Overview

The npm package y18n before versions 3.2.2, 4.0.1, and 5.0.5 is vulnerable to Prototype Pollution.

POC

const y18n = require('y18n')();

y18n.setLocale('__proto__');
y18n.updateLocale({polluted: true});

console.log(polluted); // true

Recommendation

Upgrade to version 3.2.2, 4.0.1, 5.0.5 or later.

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Configuration

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[codecov]

Codecov Report

Merging #288 (f41a288) into master (39f2dc8) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #288   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          131       131           
=========================================
  Hits           131       131           

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