Merge pull request #601 from 47degrees/dep/scala-2-12-13-and-2-13-4

Update Scala: 2.12.12/2.13.4, sbt-mdoc: 2.2.16

Author: sloshy

build.sbt

@@ -1,6 +1,6 @@
 ThisBuild / organization := "com.47deg"
 ThisBuild / scalaVersion := "2.13.2"
-ThisBuild / crossScalaVersions := Seq("2.12.11", "2.13.2")
+ThisBuild / crossScalaVersions := Seq("2.12.12", "2.13.4")
 
 addCommandAlias("ci-test", "scalafmtCheckAll; scalafmtSbtCheck; mdoc; testCovered")
 addCommandAlias("ci-docs", "github; mdoc; headerCreateAll; publishMicrosite")

project/plugins.sbt

@@ -2,7 +2,7 @@ addSbtPlugin("com.geirsson"              % "sbt-ci-release"           % "1.5.5")
 addSbtPlugin("com.47deg"                 % "sbt-microsites"           % "1.3.0")
 addSbtPlugin("org.scoverage"             % "sbt-scoverage"            % "1.6.1")
 addSbtPlugin("org.scalameta"             % "sbt-scalafmt"             % "2.4.2")
-addSbtPlugin("org.scalameta"             % "sbt-mdoc"                 % "2.2.14")
+addSbtPlugin("org.scalameta"             % "sbt-mdoc"                 % "2.2.16")
 addSbtPlugin("com.eed3si9n"              % "sbt-unidoc"               % "0.4.3")
 addSbtPlugin("de.heikoseeberger"         % "sbt-header"               % "5.6.0")
 addSbtPlugin("com.alejandrohdezma"       % "sbt-codecov"              % "0.2.0")