Add support for IJ 2020.3 (#941)

Author: raniejade

.github/workflows/check-pr-idea-plugin.yaml

@@ -15,7 +15,7 @@ jobs:
   build:
     strategy:
       matrix:
-        ij_sdk: [IJ193, IJ201, IJ202]
+        ij_sdk: [IJ193, IJ201, IJ202, IJ203]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2

.github/workflows/ci.yaml

@@ -43,7 +43,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ij_sdk: [IJ193, IJ201, IJ202]
+        ij_sdk: [IJ193, IJ201, IJ202, IJ203]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2

spek-ide-plugin-intellij-idea/build.gradle.kts

@@ -26,10 +26,17 @@ val buildMatrix = mapOf(
         "IJ183",
         ij.VersionRange("202.1", "202.*"),
         arrayOf("java", "org.jetbrains.kotlin:1.3.72-release-IJ2020.1-5")
+    ),
+    "IJ203" to ij.BuildConfig(
+        "203.5981.155",
+        "IJ2020.3",
+        "IJ183",
+        ij.VersionRange("203.1", "203.*"),
+        arrayOf("java", "org.jetbrains.kotlin:1.4.0-release-IJ2020.2-1")
     )
 )
 
-val sdkVersion = project.properties["ij.version"] ?: "IJ202"
+val sdkVersion = project.properties["ij.version"] ?: "IJ203"
 val settings = checkNotNull(buildMatrix[sdkVersion])
 
 intellij {