[Snyk] Fix for 33 vulnerabilities

[Harshith5346]

Snyk has created this PR to fix 33 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
	Arbitrary Code Execution SNYK-JS-SANITIZEHTML-585892	291
	Forgeable Public/Private Tokens npm:jws:20160726	272
	Authentication Bypass npm:jsonwebtoken:20150331	266
	Prototype Pollution SNYK-JS-LODASH-608086	250
	Uninitialized Memory Exposure npm:base64url:20180511	246
	Authorization Bypass SNYK-JS-EXPRESSJWT-575022	241
	Code Injection SNYK-JS-LODASH-1040724	239
	Cross-site Scripting (XSS) npm:sanitize-html:20161026	224
	Use of a Broken or Risky Cryptographic Algorithm SNYK-JS-JSONWEBTOKEN-3180026	217
	Improper Authentication SNYK-JS-JSONWEBTOKEN-3180022	197
	Validation Bypass SNYK-JS-SANITIZEHTML-1070780	185
	Prototype Pollution SNYK-JS-LODASH-6139239	170
	Uncontrolled resource consumption SNYK-JS-BRACES-6838727	169
	Regular Expression Denial of Service (ReDoS) SNYK-JS-ANSIREGEX-1583908	159
	Prototype Pollution SNYK-JS-LODASH-450202	152
	Prototype Pollution SNYK-JS-LODASH-73638	149
	Prototype Pollution npm:lodash:20180130	140
	Improper Restriction of Security Token Assignment SNYK-JS-JSONWEBTOKEN-3180024	133
	Regular Expression Denial of Service (ReDoS) SNYK-JS-LODASH-73639	133
	Access Restriction Bypass SNYK-JS-SANITIZEHTML-1070786	133
	Missing Release of Resource after Effective Lifetime SNYK-JS-INFLIGHT-6095116	131
	Inefficient Regular Expression Complexity SNYK-JS-MICROMATCH-6838728	124
	Prototype Pollution SNYK-JS-UNSETVALUE-2400660	115
	Directory Traversal SNYK-JS-MOMENT-2440688	114
	Regular Expression Denial of Service (ReDoS) npm:moment:20161019	102
	Information Exposure SNYK-JS-SANITIZEHTML-6256334	89
	Use of Weak Hash SNYK-JS-CRYPTOJS-6028119	87
	Regular Expression Denial of Service (ReDoS) SNYK-JS-SANITIZEHTML-2957526	75
	Regular Expression Denial of Service (ReDoS) SNYK-JS-LODASH-1018905	63
	Cross-site Scripting (XSS) npm:sanitize-html:20160801	59
	Cross-site Scripting (XSS) npm:sanitize-html:20141024	57
	Regular Expression Denial of Service (ReDoS) npm:moment:20160126	45
	Regular Expression Denial of Service (ReDoS) npm:moment:20170905	40

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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.
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