[Snyk] Fix for 33 vulnerabilities

[jbowes]

Snyk has created this PR to fix 33 vulnerabilities in the yarn dependencies of this project.

Snyk changed the following file(s):

• node/yarn/package.json
• node/yarn/yarn.lock

Note for zero-installs users

If you are using the Yarn feature zero-installs that was introduced in Yarn V2, note that this PR does not update the .yarn/cache/ directory meaning this code cannot be pulled and immediately developed on as one would expect for a zero-install project - you will need to run yarn to update the contents of the ./yarn/cache directory.
If you are not using zero-install you can ignore this as your flow should likely be unchanged.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Incomplete List of Disallowed Inputs SNYK-JS-BABELTRAVERSE-5962462	721
	Improper Verification of Cryptographic Signature SNYK-JS-ELLIPTIC-7577916	721
	Improper Verification of Cryptographic Signature SNYK-JS-ELLIPTIC-7577917	721
	Improper Verification of Cryptographic Signature SNYK-JS-ELLIPTIC-7577918	721
	Regular Expression Denial of Service (ReDoS) SNYK-JS-ANSIREGEX-1583908	696
	Prototype Pollution SNYK-JS-ASYNC-2441827	696
	Uncontrolled resource consumption SNYK-JS-BRACES-6838727	696
	Prototype Poisoning SNYK-JS-QS-3153490	696
	Regular Expression Denial of Service (ReDoS) SNYK-JS-SEMVER-3247795	696
	Regular Expression Denial of Service (ReDoS) SNYK-JS-TMPL-1583443	696
	Denial of Service (DoS) SNYK-JS-WS-7266574	696
	Improper Input Validation SNYK-JS-FOLLOWREDIRECTS-6141137	686
	Code Injection SNYK-JS-LODASHTEMPLATE-1088054	681
	Information Exposure SNYK-JS-FOLLOWREDIRECTS-6444610	646
	Prototype Pollution SNYK-JS-TOUGHCOOKIE-5672873	646
	Prototype Pollution SNYK-JS-JSON5-3182856	641
	Improper Verification of Cryptographic Signature SNYK-JS-BROWSERIFYSIGN-6037026	589
	Prototype Pollution SNYK-JS-LOADERUTILS-3043105	589
	Inefficient Regular Expression Complexity SNYK-JS-MICROMATCH-6838728	589
	Regular Expression Denial of Service (ReDoS) npm:underscore.string:20170908	589
	Information Exposure SNYK-JS-FOLLOWREDIRECTS-2332181	586
	Regular Expression Denial of Service (ReDoS) SNYK-JS-PROMPTS-1729737	586
	Denial of Service (DoS) SNYK-JS-NWSAPI-2841516	524
	Information Exposure SNYK-JS-NANOID-2332193	521
	Prototype Pollution SNYK-JS-MINIMIST-2429795	506
	Regular Expression Denial of Service (ReDoS) SNYK-JS-WORDWRAP-3149973	506
	Regular Expression Denial of Service (ReDoS) SNYK-JS-I-1726768	479
	Regular Expression Denial of Service (ReDoS) SNYK-JS-LOADERUTILS-3042992	479
	Regular Expression Denial of Service (ReDoS) SNYK-JS-LOADERUTILS-3105943	479
	Regular Expression Denial of Service (ReDoS) SNYK-JS-MINIMATCH-3050818	479
	Improper Input Validation SNYK-JS-POSTCSS-5926692	479
	Reverse Tabnabbing SNYK-JS-ISTANBULREPORTS-2328088	429
	Information Exposure SNYK-JS-FOLLOWREDIRECTS-2396346	344

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Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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🦉 Regular Expression Denial of Service (ReDoS)
🦉 Prototype Pollution
🦉 Improper Input Validation
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