[Snyk] Fix for 28 vulnerabilities

[Raoul1996]

Snyk has created this PR to fix 28 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json
• package-lock.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Uninitialized Memory Exposure npm:http-proxy-agent:20180406	796
	Uninitialized Memory Exposure npm:https-proxy-agent:20180402	796
	Arbitrary Code Execution SNYK-JS-THENIFY-571690	751
	Arbitrary Code Injection SNYK-JS-SERIALIZEJAVASCRIPT-570062	706
	Regular Expression Denial of Service (ReDoS) SNYK-JS-ANSIREGEX-1583908	696
	Regular Expression Denial of Service (ReDoS) SNYK-JS-SEMVER-3247795	696
	Regular Expression Denial of Service (ReDoS) SNYK-JS-UAPARSERJS-1023599	696
	Regular Expression Denial of Service (ReDoS) SNYK-JS-UAPARSERJS-610226	696
	Prototype Pollution SNYK-JS-EXTEND2-2320315	686
	Misinterpretation of Input SNYK-JS-URIJS-2440699	646
	Cross-site Scripting (XSS) SNYK-JS-SERIALIZEJAVASCRIPT-536840	619
	Cross-site Scripting (XSS) SNYK-JS-SERIALIZEJAVASCRIPT-6056521	619
	Regular Expression Denial of Service (ReDoS) SNYK-JS-UAPARSERJS-1072471	616
	Prototype Pollution SNYK-JS-MINIMIST-559764	601
	Cross-site Scripting (XSS) SNYK-JS-URIJS-2441239	591
	Open Redirect SNYK-JS-URIJS-1319803	586
	Open Redirect SNYK-JS-URIJS-2401466	586
	Improper Input Validation SNYK-JS-URIJS-2415026	586
	Open Redirect SNYK-JS-URIJS-2419067	586
	Regular Expression Denial of Service (ReDoS) npm:ua-parser-js:20180227	586
	Prototype Pollution SNYK-JS-URIJS-1319806	579
	Prototype Pollution npm:extend:20180424	579
	Information Exposure SNYK-JS-NODEFETCH-2342118	539
	Improper Input Validation SNYK-JS-URIJS-1055003	539
	Denial of Service SNYK-JS-NODEFETCH-674311	520
	Prototype Pollution SNYK-JS-MINIMIST-2429795	506
	Regular Expression Denial of Service (ReDoS) SNYK-JS-EGGCOOKIES-2932175	479
	Improper Input Validation SNYK-JS-URIJS-1078286	479

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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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