Update SourceKitten and Yams

[jpsim]

Addresses #3300

[SwiftLintBot]

	2 Warnings
⚠️	Please include a CHANGELOG entry to credit yourself! You can find it at CHANGELOG.md.
⚠️	This PR may need tests.

	12 Messages
📖	Linting Aerial with this PR took 1.83s vs 1.82s on master (0% slower)
📖	Linting Alamofire with this PR took 2.69s vs 2.68s on master (0% slower)
📖	Linting Firefox with this PR took 9.07s vs 9.12s on master (0% faster)
📖	Linting Kickstarter with this PR took 14.67s vs 14.68s on master (0% faster)
📖	Linting Moya with this PR took 1.36s vs 1.34s on master (1% slower)
📖	Linting Nimble with this PR took 1.37s vs 1.37s on master (0% slower)
📖	Linting Quick with this PR took 0.65s vs 0.66s on master (1% faster)
📖	Linting Realm with this PR took 2.67s vs 2.69s on master (0% faster)
📖	Linting SourceKitten with this PR took 1.03s vs 1.06s on master (2% faster)
📖	Linting Sourcery with this PR took 7.08s vs 7.15s on master (0% faster)
📖	Linting Swift with this PR took 10.71s vs 10.78s on master (0% faster)
📖	Linting WordPress with this PR took 16.77s vs 16.74s on master (0% slower)

Here's an example of your CHANGELOG entry:

* Update SourceKitten and Yams.  
  [jpsim](https://github.com/jpsim)
  [#issue_number](https://github.com/realm/SwiftLint/issues/issue_number)

note: There are two invisible spaces after the entry's text.

Generated by 🚫 Danger

[codecov-commenter]

Codecov Report

Merging #3319 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3319   +/-   ##
=======================================
  Coverage   90.56%   90.56%           
=======================================
  Files         416      416           
  Lines       20357    20357           
=======================================
  Hits        18437    18437           
  Misses       1920     1920           

Impacted Files	Coverage Δ
...iftLintFramework/Extensions/String+SwiftLint.swift	94.54% <0.00%> (-1.82%)	⬇️
...ftLintFramework/Rules/Lint/PrivateOutletRule.swift	100.00% <0.00%> (+3.84%)	⬆️

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