Update scala-library, scala-reflect to 2.12.18

Author: scala-steward

.github/workflows/feature.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
         matrix:
-          scala: [2.12.11, 2.13.2]
+          scala: [2.12.18, 2.13.2]
     steps:
     - uses: actions/checkout@v2
     - uses: olafurpg/setup-scala@v5

.github/workflows/main.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
         matrix:
-          scala: [2.12.11, 2.13.2]
+          scala: [2.12.18, 2.13.2]
     steps:
     - uses: actions/checkout@v2
     - uses: olafurpg/setup-scala@v5

build.sbt

@@ -31,7 +31,7 @@ lazy val buildSettings = inThisBuild(
 )
 
 lazy val coreSettings = Seq(
-  crossScalaVersions := scalaVersion.value :: "2.12.11" :: Nil,
+  crossScalaVersions := scalaVersion.value :: "2.12.18" :: Nil,
   libraryDependencies ++= Seq(
     scalaOrganization.value % "scala-reflect" % scalaVersion.value % "provided",
     "com.chuusai" %%% "shapeless" % "2.3.3",