Update MagicNumber rule to exclude .kts files (#4877)

* Update MagicNumber rule to exclude .kts files

The MagicNumber rule should not be enforced in script files,
because you cannot have constants in these files.

Closes #4863

* Adapt Exclusion.kt for MagicNumber rule

detekt-core/src/main/resources/default-detekt-config.yml

@@ -543,7 +543,7 @@ style:
     maxJumpCount: 1
   MagicNumber:
     active: true
-    excludes: ['**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/jsTest/**', '**/iosTest/**']
+    excludes: ['**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/jsTest/**', '**/iosTest/**', '**/*.kts']
     ignoreNumbers:
       - '-1'
       - '0'

detekt-generator/src/main/kotlin/io/gitlab/arturbosch/detekt/generator/printer/defaultconfig/Exclusion.kt

@@ -5,7 +5,7 @@ import io.gitlab.arturbosch.detekt.generator.collection.Rule
 /**
  * Holds a list of extra exclusions for rules and rule sets.
  */
-val exclusions = arrayOf(TestExclusions, KotlinScriptExclusions, LibraryExclusions)
+val exclusions = arrayOf(TestExclusions, KotlinScriptExclusions, KotlinScriptAndTestExclusions, LibraryExclusions)
 
 /**
  * Tracks rules and rule sets which needs an extra `excludes: $pattern` property
@@ -28,7 +28,6 @@ private object TestExclusions : Exclusions() {
     override val rules = setOf(
         "FunctionNaming",
         "WildcardImport",
-        "MagicNumber",
         "LateinitUsage",
         "StringLiteralDuplication",
         "SpreadOperator",
@@ -51,6 +50,14 @@ private object KotlinScriptExclusions : Exclusions() {
     override val rules = setOf("MissingPackageDeclaration")
 }
 
+private object KotlinScriptAndTestExclusions : Exclusions() {
+
+    override val pattern =
+        "['**/test/**', '**/androidTest/**', '**/commonTest/**', '**/jvmTest/**', '**/jsTest/**', '**/iosTest/**', " +
+            "'**/*.kts']"
+    override val rules = setOf("MagicNumber")
+}
+
 private object LibraryExclusions : Exclusions() {
 
     override val pattern = "['**']"