Update scala-library, scala-reflect to 2.13.7 (#2401)

* Update sbt-scalafix to 0.9.32

* Update scala-library, scala-reflect to 2.13.7

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        scala: [2.13.6, 2.12.14]
+        scala: [2.13.7, 2.12.14]
 
     steps:
       - name: Checkout
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        scala: [2.13.6, 2.12.14]
+        scala: [2.13.7, 2.12.14]
     steps:
       - name: Checkout
         uses: actions/checkout@v2

build.sbt

@@ -5,7 +5,7 @@ enablePlugins(SiteScaladocPlugin)
 lazy val commonSettings = Seq(
   organization := "edu.berkeley.cs",
   scalaVersion := "2.12.14",
-  crossScalaVersions := Seq("2.13.6", "2.12.14")
+  crossScalaVersions := Seq("2.13.7", "2.12.14")
 )
 
 lazy val isAtLeastScala213 = Def.setting {

build.sc

@@ -10,7 +10,7 @@ import mill.contrib.buildinfo.BuildInfo
 
 import java.io.IOException
 
-object firrtl extends mill.Cross[firrtlCrossModule]("2.12.14", "2.13.6")
+object firrtl extends mill.Cross[firrtlCrossModule]("2.12.14", "2.13.7")
 
 class firrtlCrossModule(val crossScalaVersion: String)
     extends CrossSbtModule

project/plugins.sbt

@@ -20,7 +20,7 @@ addSbtPlugin("com.simplytyped" % "sbt-antlr4" % "0.8.2")
 
 addSbtPlugin("com.github.sbt" % "sbt-protobuf" % "0.7.0")
 
-addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.30")
+addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.32")
 
 addSbtPlugin("com.thoughtworks.sbt-api-mappings" % "sbt-api-mappings" % "3.0.0")