Bump js-yaml from 3.8.2 to 3.13.1 in /swagger-generator

[dependabot]

Bumps js-yaml from 3.8.2 to 3.13.1.

Changelog

Sourced from js-yaml's changelog.

[3.13.1] - 2019-04-05

Security

• Fix possible code execution in (already unsafe) .load(), #480.

[3.13.0] - 2019-03-20

Security

• Security fix: safeLoad() can hang when arrays with nested refs
  used as key. Now throws exception for nested arrays. #475.

[3.12.2] - 2019-02-26

Fixed

• Fix noArrayIndent option for root level, #468.

[3.12.1] - 2019-01-05

Added

• Added noArrayIndent option, #432.

[3.12.0] - 2018-06-02

Changed

• Support arrow functions without a block statement, #421.

[3.11.0] - 2018-03-05

Added

• Add arrow functions suport for !!js/function.

Fixed

• Fix dump in bin/octal/hex formats for negative integers, #399.

[3.10.0] - 2017-09-10

Fixed

• Fix condenseFlow output (quote keys for sure, instead of spaces), #371, #370.
• Dump astrals as codepoints instead of surrogate pair, #368.

[3.9.1] - 2017-07-08

Fixed

• Ensure stack is present for custom errors in node 7.+, #351.

[3.9.0] - 2017-07-08

Added

• Add condenseFlow option (to create pretty URL query params), #346.

Fixed

... (truncated)

Commits

• 665aadd 3.13.1 released
• da8ecf2 Browser files rebuild
• b2f9e88 Merge pull request #480 from nodeca/toString
• e18afbf Fix possible code execution in (already unsafe) load()
• 9d4ce5e 3.13.0 released
• f64c673 Browser files rebuild
• a567ef3 Restrict data types for object keys
• 59b6e76 Fix test name
• e4267fc 3.12.2 released
• 7231a49 Browser files rebuild
• Additional commits viewable in compare view

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