Update dependency node-fetch to v2.1.1

[renovate]

This Pull Request updates dependency node-fetch from v2.0.0 to v2.1.1

Release Notes

v2.1.0

See CHANGELOG:

• Enhance: allow using ArrayBuffer as the body of a fetch() or Request
• Fix: store HTTP headers of a Headers object internally with the given case, for compatibility with older servers that incorrectly treated header names in a case-sensitive manner
• Fix: silently ignore invalid HTTP headers
• Fix: handle HTTP redirect responses without a Location header just like non-redirect responses
• Fix: include bodies when following a redirection when appropriate

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v2.1.1

See CHANGELOG.

Fix packaging errors in version 2.1.0.

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Commits

v2.1.0

• a8f6d79 Simplify header validity check
• 1592ca1 Use caseless Headers handling
• feae6d6 Ignore illegal HTTP headers
• fc53995 Support ArrayBuffer as body (#​408)
• 35722f1 Significant rework of redirection
• 119138e Update existing algorithm step numbers
• 780598a Harmonize style (#​413)

v2.1.1

• ccaeae0 v2.1.0
• c7765c4 Merge remote-tracking branch 'origin/master'
• 6a9828e Update CHANGELOG
• fb86ab3 v2.1.1

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This PR has been generated by Renovate Bot.

[codecov-io]

Codecov Report

Merging #46 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #46   +/-   ##
=======================================
  Coverage   99.52%   99.52%           
=======================================
  Files          16       16           
  Lines         212      212           
  Branches       11       11           
=======================================
  Hits          211      211           
  Misses          1        1

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