Update scala-library, scala-reflect to 2.12.20 (#354)

* Update scala-library, scala-reflect to 2.12.20

* Regenerate GitHub Actions workflow

Executed command: sbt githubWorkflowGenerate

Author: scala-steward

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.11.12, 2.12.19, 2.13.14, 3.3.3]
+        scala: [2.11.12, 2.12.20, 2.13.14, 3.3.3]
         java: [zulu@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -100,12 +100,12 @@ jobs:
           tar xf targets.tar
           rm targets.tar
 
-      - name: Download target directories (2.12.19)
+      - name: Download target directories (2.12.20)
         uses: actions/download-artifact@v4
         with:
-          name: target-${{ matrix.os }}-2.12.19-${{ matrix.java }}
+          name: target-${{ matrix.os }}-2.12.20-${{ matrix.java }}
 
-      - name: Inflate target directories (2.12.19)
+      - name: Inflate target directories (2.12.20)
         run: |
           tar xf targets.tar
           rm targets.tar

build.sbt

@@ -8,7 +8,7 @@ organization := "com.github.swagger-akka-http"
 
 ThisBuild / scalaVersion := "2.13.14"
 
-ThisBuild / crossScalaVersions := Seq("2.11.12", "2.12.19", "2.13.14", "3.3.3")
+ThisBuild / crossScalaVersions := Seq("2.11.12", "2.12.20", "2.13.14", "3.3.3")
 
 ThisBuild / organizationHomepage := Some(url("https://github.com/swagger-akka-http/swagger-scala-module"))