Bump ts-loader from 5.4.5 to 6.2.1

Sourced from ts-loader's releases.

6.2.1

• Output types alongside JS files, enable declaration maps - thanks @meyer!

Although this is tagged as v6.2.6 in Git, it's actually 6.2.1 (a side effect of me having problems during the upgrade of GitHub Actions)

v6.2.0

• Emitting .tsbuildinfo when using watch api - thanks @sheetalkamat!

v6.1.2

• don't emit declaration files for a declaration file (#1014) - thanks @gvinaccia!
• Consume typescript apis from typescript nightly - thanks @sheetalkamat!

v6.1.1

• Fix SolutionBuilder watches and related fixes (#998) - thanks @sheetalkamat!
• fix: no errors reported if flagged with @ts-check (#1004) - thanks @reinholdk!

v6.1.0

• Build upstream project references with SolutionBuilder (#851, #913) - thanks @sheetalkamat!

v6.0.4

• Fix issue when handling files not included in tsconfig.json (#934) - thanks @davazp!

v6.0.3

• Upgrade typescript version to 3.5.2 (#954) - thanks @fa93hws

v6.0.2

• Set configFilePath when reading config file (#939) - thanks @konpikwastaken!

v6.0.1

• Fix issue with resolveTypeReferenceDirective causing errors like Cannot find name 'it' with Jest (#934) (#919) - thanks @andrewbranch!
• Fix TypeScript diagnostics not being printed to console when using project references (#932) - thanks @andrewbranch!

v6.0.0

• Drop support for node < 8.6 related to micromatch upgrade to 4; see: TypeStrong/ts-loader#929
• Update dependencies - thanks @johnnyreilly!

Sourced from ts-loader's changelog.

v6.2.1

• Output types alongside JS files, enable declaration maps - thanks @meyer!

v6.2.0

• Emitting .tsbuildinfo when using watch api - thanks @sheetalkamat!

v6.1.2

• don't emit declaration files for a declaration file (#1014) - thanks @gvinaccia!
• Consume typescript apis from typescript nightly - thanks @sheetalkamat!

v6.1.1

• Fix SolutionBuilder watches and related fixes (#998) - thanks @sheetalkamat!
• fix: no errors reported if flagged with @ts-check (#1004) - thanks @reinholdk!

v6.1.0

• Build upstream project references with SolutionBuilder (#851, #913) - thanks @sheetalkamat!

v6.0.4

• Fix issue when handling files not included in tsconfig.json (#934) - thanks @davazp!

v6.0.3

• Upgrade typescript version to 3.5.2 (#954) - thanks @fa93hws

v6.0.2

• Set configFilePath when reading config file (#939) - thanks @konpikwastaken!

v6.0.1

• Fix issue with resolveTypeReferenceDirective causing errors like Cannot find name 'it' with Jest (#934) (#919) - thanks @andrewbranch!
• Fix TypeScript diagnostics not being printed to console when using project references (#932) - thanks @andrewbranch!

v6.0.0

• Drop support for node < 8.6 related to micromatch upgrade to 4; see: TypeStrong/ts-loader#929
• Update dependencies - thanks @johnnyreilly!

• d632335 log github context
• b4806e0 converted main.workflow to Actions V2 yml files (#1018)
• ce39c25 Emitting .tsbuildinfo when using watch api (#1017)
• ed8d596 Consume typescript apis from typescript nightly (#1016)
• dff1e17 fixes TypeStrong/ts-loader#1014 (#1015)
• e9ef049 3.6 was missing from Travis / AppVeyor build matrices. (#1011)
• 9a83912 Prepare for 6.1.1 release (#1010)
• f06ff68 fix: no errors reported if flagged with @ts-check (#1008)
• ae0698d Fix SolutionBuilder watches (#1003)
• bfa48c7 Merge pull request #935 from sheetalkamat/solutionBuilder
• Additional commits viewable in compare view

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