Update dependency express to v4.15.5

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This PR contains the following updates:

Package	Type	Update	Change
express (source)	dependencies	patch	4.15.3 -> 4.15.5

By merging this PR, the issue #10 will be automatically resolved and closed:

Severity	CVSS Score	CVE
High	7.5	CVE-2017-16118
High	7.5	CVE-2017-16119
High	7.5	CVE-2017-16138
Medium	5.3	CVE-2017-16137

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Release Notes

expressjs/express

v4.15.5

Compare Source

===================

• deps: [email protected]
• deps: finalhandler@~1.0.6
  • deps: [email protected]
  • deps: parseurl@~1.3.2
• deps: [email protected]
  • Fix handling of modified headers with invalid dates
  • perf: improve ETag match loop
  • perf: improve If-None-Match token parsing
• deps: [email protected]
  • Fix handling of modified headers with invalid dates
  • deps: [email protected]
  • deps: etag@~1.8.1
  • deps: [email protected]
  • perf: improve If-Match token parsing
• deps: [email protected]
  • deps: parseurl@~1.3.2
  • deps: [email protected]
  • perf: improve slash collapsing

v4.15.4

Compare Source

===================

• deps: [email protected]
• deps: depd@~1.1.1
  • Remove unnecessary Buffer loading
• deps: finalhandler@~1.0.4
  • deps: [email protected]
• deps: proxy-addr@~1.1.5
  • Fix array argument being altered
  • deps: [email protected]
• deps: [email protected]
• deps: [email protected]
  • deps: [email protected]
  • deps: depd@~1.1.1
  • deps: http-errors@~1.6.2
• deps: [email protected]
  • deps: [email protected]

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