Add 4.1.0, 4.1.1 and 4.2.0 to Swift version detection

[norio-nomura]

No description provided.

[norio-nomura]

It seems https://cocoapods-specs.circleci.com/fetch-cocoapods-repo-from-s3.sh caused failure.
I'll rerun the job later.

[SwiftLintBot]

	12 Messages
📖	Linting Aerial with this PR took 0.43s vs 0.42s on master (2% slower)
📖	Linting Alamofire with this PR took 3.44s vs 3.44s on master (0% slower)
📖	Linting Firefox with this PR took 13.66s vs 13.81s on master (1% faster)
📖	Linting Kickstarter with this PR took 21.06s vs 21.31s on master (1% faster)
📖	Linting Moya with this PR took 2.01s vs 2.03s on master (0% faster)
📖	Linting Nimble with this PR took 1.92s vs 1.97s on master (2% faster)
📖	Linting Quick with this PR took 0.57s vs 0.58s on master (1% faster)
📖	Linting Realm with this PR took 3.89s vs 3.89s on master (0% slower)
📖	Linting SourceKitten with this PR took 1.23s vs 1.27s on master (3% faster)
📖	Linting Sourcery with this PR took 5.17s vs 5.37s on master (3% faster)
📖	Linting Swift with this PR took 17.38s vs 17.93s on master (3% faster)
📖	Linting WordPress with this PR took 17.18s vs 17.91s on master (4% faster)

Generated by 🚫 Danger

[codecov-io]

Codecov Report

Merging #2143 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #2143      +/-   ##
==========================================
+ Coverage   89.88%   89.89%   +<.01%     
==========================================
  Files         266      266              
  Lines       15375    15385      +10     
  Branches     1013     1013              
==========================================
+ Hits        13820    13830      +10     
  Misses       1535     1535              
  Partials       20       20

Impacted Files	Coverage Δ
...ource/SwiftLintFramework/Models/SwiftVersion.swift	100% <ø> (ø)	⬆️
...sts/SwiftLintFrameworkTests/LinterCacheTests.swift	98.66% <100%> (+0.04%)	⬆️

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