Revert "disable KSPAATest on release branch"

This reverts commit c65ac57cad85f38b314414489a53a7fcff414c8c.
diff --git a/test-utils/src/test/kotlin/com/google/devtools/ksp/test/KSPAATest.kt b/test-utils/src/test/kotlin/com/google/devtools/ksp/test/KSPAATest.kt
index 89c5ebc..b2d3ac6 100644
--- a/test-utils/src/test/kotlin/com/google/devtools/ksp/test/KSPAATest.kt
+++ b/test-utils/src/test/kotlin/com/google/devtools/ksp/test/KSPAATest.kt
@@ -25,7 +25,6 @@
 import org.junit.jupiter.api.parallel.Execution
 import org.junit.jupiter.api.parallel.ExecutionMode
 
-@Disabled
 @Execution(ExecutionMode.SAME_THREAD)
 @DisabledOnOs(OS.WINDOWS)
 class KSPAATest : AbstractKSPAATest() {