[Snyk] Security upgrade https-proxy-agent from 1.0.0 to 2.1.1

[djtms]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	461/1000 Why? Recently disclosed, Has a fix available, CVSS 3.5	Regular Expression Denial of Service (ReDoS) SNYK-JS-DEBUG-3227433	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: https-proxy-agent

The new version differs by 23 commits.

• c58d365 Release 2.1.1
• 7d221cf Update Debug - Security Problems with Previous Version (Added simple Redis storage howdyai/botkit#38)
• 5543d28 Release 2.1.0
• d7a4c70 only include the port number in the Host header when non-default port
• ed300a4 only set ALPNProtocols when the property does not already exist
• 04cb725 Set ALPN to "http 1.1" by default when using tlsproxy
• 9282395 prettier
• 2b8f43b support SNI
• 6c50a9a Release 2.0.0
• b7b2bfa rename https-proxy-agent.js to index.js
• 64e1e42 update dependencies and remove semver-specific test case
• e732af7 remove console.log() call
• 11d4458 update `agent-base` to v4
• 7c65dd0 remove `extend` dependency
• bdad2dc drop Node versions < v4 from Travis-CI
• 839bd29 ⬆️ update minimum version of debug dependency
• fd7e81b opts/options
• e1420c1 test Node.js 5, 6, 7 and 8 on Travis
• 6bbbef7 travis: test io.js 1, 2, 3 and Node.js v4
• 121449b README: remove outdated `secureEndpoint` reference
• 4338d6c README: remove `secureEndpoint` docs, add `headers`
• f2b1080 https-proxy-agent: add support for proxy "headers"
• 277c006 test: remove console.log() call

See the full diff

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🦉 Regular Expression Denial of Service (ReDoS)