Update scala-library, scala-reflect to 2.12.18

[scala-steward]

About this PR

📦 Updates

• org.scala-lang:scala-library
• org.scala-lang:scala-reflect

from 2.12.17 to 2.12.18

📜 GitHub Release Notes - Version Diff

Usage

✅ Please merge!

I'll automatically update this PR to resolve conflicts as long as you don't change it yourself.

If you'd like to skip this version, you can just close this PR. If you have any feedback, just mention me in the comments below.

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Have a fantastic day writing Scala!

⚙ Adjust future updates

Add this to your .scala-steward.conf file to ignore future updates of this dependency:

updates.ignore = [ { groupId = "org.scala-lang" } ]

Or, add this to slow down future updates of this dependency:

dependencyOverrides = [{
  pullRequests = { frequency = "30 days" },
  dependency = { groupId = "org.scala-lang" }
}]

^{labels: library-update, early-semver-patch, semver-spec-patch, commit-count:1}

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (fa75230) 77.81% compared to head (f38c7e3) 82.99%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1756      +/-   ##
==========================================
+ Coverage   77.81%   82.99%   +5.17%     
==========================================
  Files          95       95              
  Lines        5878     5885       +7     
  Branches      730      737       +7     
==========================================
+ Hits         4574     4884     +310     
+ Misses       1304     1001     -303     

Files	Coverage Δ
...re/src/main/scala/dev/guardrail/core/Mappish.scala	75.00% <100.00%> (ø)
...ain/scala/dev/guardrail/generators/Framework.scala	0.00% <ø> (ø)
...dev/guardrail/generators/spi/FrameworkLoader.scala	80.95% <100.00%> (-14.29%)	⬇️
...nerators/java/dropwizard/DropwizardGenerator.scala	31.76% <100.00%> (ø)
...generators/java/springMvc/SpringMvcGenerator.scala	26.58% <100.00%> (ø)
...rdrail/generators/java/JavaGeneratorMappings.scala	83.33% <100.00%> (ø)
.../generators/scala/akkaHttp/AkkaHttpGenerator.scala	34.00% <100.00%> (+8.00%)	⬆️
...rail/generators/scala/http4s/Http4sGenerator.scala	28.57% <100.00%> (+8.57%)	⬆️
...rail/generators/scala/ScalaGeneratorMappings.scala	100.00% <100.00%> (+20.00%)	⬆️
...scala/dev/guardrail/core/IndexedDistributive.scala	50.00% <0.00%> (ø)

... and 27 files with indirect coverage changes

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