Update Scala 2.12 to 2.12.20

Author: Gedochao

.github/workflows/ci.yml

@@ -1609,7 +1609,7 @@ jobs:
       env:
         PGP_SECRET: ${{ secrets.PGP_SECRET }}
     - run: ./mill -i ci.setShouldPublish
-    - run: ./mill -i publishSonatype '{__[],_,test-runner[2.13.14],test-runner[2.12.19],runner[2.13.14],runner[2.12.19]}.publishArtifacts'
+    - run: ./mill -i publishSonatype '{__[],_,test-runner[2.13.14],test-runner[2.12.20],runner[2.13.14],runner[2.12.20]}.publishArtifacts'
       if: env.SHOULD_PUBLISH == 'true'
       env:
         PGP_PASSWORD: ${{ secrets.PGP_PASSPHRASE }}

project/deps.sc

@@ -3,7 +3,7 @@ import mill._
 import scalalib._
 
 object Scala {
-  def scala212        = "2.12.19"
+  def scala212        = "2.12.20"
   def scala213        = "2.13.14"
   def runnerScala3    = "3.0.2" // the newest version that is compatible with all Scala 3.x versions
   def scala3LtsPrefix = "3.3"   // used for the LTS version tags
@@ -51,7 +51,7 @@ object Scala {
       (0 until max35).map(i => s"3.5.$i") ++ Seq(scala3Next)
   }
 
-  def maxAmmoniteScala212Version = scala212
+  def maxAmmoniteScala212Version = "2.12.19"
   def maxAmmoniteScala213Version = scala213
   def maxAmmoniteScala3Version   = "3.4.2"
   lazy val listMaxAmmoniteScalaVersion =

website/docs/reference/scala-versions.md

@@ -25,5 +25,6 @@ it is recommended to update scala-cli.
 | 1.2.1 - 1.3.0      |  3.4.1  |    2.13.13 |    2.12.19 |
 | 1.3.1              |  3.4.1  |    2.13.14 |    2.12.19 |
 | 1.3.2 - 1.4.3      |  3.4.2  |    2.13.14 |    2.12.19 |
-| 1.5.0 - current    |  3.5.0  |    2.13.14 |    2.12.19 |
+| 1.5.0              |  3.5.0  |    2.13.14 |    2.12.19 |
+| 1.5.1 - current    |  3.5.0  |    2.13.14 |    2.12.20 |