Update Gradle build script dependencies (#1241)

Author: syall

.changeset/clever-planes-cross.md

@@ -0,0 +1,2 @@
+---
+---

smithy-typescript-codegen/build.gradle.kts

@@ -36,12 +36,12 @@ buildscript {
 dependencies {
     val smithyVersion: String by project
 
+    // Smithy generic dependencies
     api("software.amazon.smithy:smithy-codegen-core:$smithyVersion")
     api("software.amazon.smithy:smithy-model:$smithyVersion")
+    api("software.amazon.smithy:smithy-protocol-test-traits:$smithyVersion")
     api("software.amazon.smithy:smithy-rules-engine:$smithyVersion")
     api("software.amazon.smithy:smithy-waiters:$smithyVersion")
-
-    implementation("software.amazon.smithy:smithy-protocol-test-traits:$smithyVersion")
 }
 
 sourceSets {