fix!: always generate classes with version suffixes, closes cdk8s-team/cdk8s#1962

Author: shinebayar-g

src/import/crd.ts

@@ -101,7 +101,7 @@ export class CustomResourceDefinition {
 
       // to preseve backwards compatiblity, only append a suffix for
       // the second version onwards.
-      const suffix = i === 0 ? '' : toPascalCase(version.name);
+      const suffix = toPascalCase(version.name);
 
       const types = new TypeGenerator({});