Use string TypeScript type instead of String

Signed-off-by: Oliver Sand <oliver.sand@sda-se.com>

.changeset/old-clouds-whisper.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-kubernetes-backend': patch
+---
+
+Use `string` TypeScript type instead of `String`.

plugins/kubernetes-backend/src/kubernetes-auth-translator/KubernetesAuthTranslatorGenerator.ts

@@ -21,7 +21,7 @@ import { AwsIamKubernetesAuthTranslator } from './AwsIamKubernetesAuthTranslator
 
 export class KubernetesAuthTranslatorGenerator {
   static getKubernetesAuthTranslatorInstance(
-    authProvider: String,
+    authProvider: string,
   ): KubernetesAuthTranslator {
     switch (authProvider) {
       case 'google': {

plugins/kubernetes-backend/src/service/KubernetesFanOutHandler.test.ts

@@ -34,8 +34,8 @@ const mockFetch = (mock: jest.Mock) => {
 };
 
 function generateMockResourcesAndErrors(
-  serviceId: String,
-  clusterName: String,
+  serviceId: string,
+  clusterName: string,
 ) {
   if (clusterName === 'empty-cluster') {
     return {