[Snyk] Fix for 8 vulnerabilities

[deanpress]

Snyk has created this PR to fix 8 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Improper Verification of Cryptographic Signature SNYK-JS-ELLIPTIC-7577916	776
	Improper Verification of Cryptographic Signature SNYK-JS-ELLIPTIC-7577917	776
	Improper Verification of Cryptographic Signature SNYK-JS-ELLIPTIC-7577918	776
	Regular Expression Denial of Service (ReDoS) SNYK-JS-SEMVER-3247795	696
	Code Injection SNYK-JS-LODASH-1040724	681
	Regular Expression Denial of Service (ReDoS) SNYK-JS-LODASH-1018905	586
	Cryptographic Issues SNYK-JS-ELLIPTIC-1064899	554
	Prototype Pollution SNYK-JS-MINIMIST-2429795	506

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• 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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