Update dependency express to v4.20.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
express (source)	4.19.2 -> 4.20.0

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Release Notes

expressjs/express (express)

v4.20.0

Compare Source

==========

• deps: serve-static@0.16.0
  • Remove link renderization in html while redirecting
• deps: send@0.19.0
  • Remove link renderization in html while redirecting
• deps: body-parser@0.6.0
  • add depth option to customize the depth level in the parser
  • IMPORTANT: The default depth level for parsing URL-encoded data is now 32 (previously was Infinity)
• Remove link renderization in html while using res.redirect
• deps: path-to-regexp@0.1.10
  • Adds support for named matching groups in the routes using a regex
  • Adds backtracking protection to parameters without regexes defined
• deps: encodeurl@~2.0.0
  • Removes encoding of \, |, and ^ to align better with URL spec
• Deprecate passing options.maxAge and options.expires to res.clearCookie
  • Will be ignored in v5, clearCookie will set a cookie with an expires in the past to instruct clients to delete the cookie

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