Migrate all JDK 9 related tests to JDK 11

compiler/testData/codegen/bytecodeText/stringOperations/concatDynamic.kt

@@ -1,4 +1,4 @@
-// JVM_TARGET: 9
+// JVM_TARGET: 11
 class A
 
 inline class IC(val x: String)
@@ -42,4 +42,4 @@ fun box(a: String, b: String?, x: IC?) {
 
 // .. but ir backend performs wise `toString-impl` call
 // one in IC.toString() + one in concatenation
-// 2 INVOKESTATIC IC.toString-impl
+// 2 INVOKESTATIC IC.toString-impl