Apply suggestions from code review

Co-authored-by: Himanshu Mishra <himanshu@orkohunter.net>
Signed-off-by: Jonah Back <jonah@jonahback.com>

.changeset/big-pumpkins-rush.md

@@ -2,4 +2,4 @@
 '@backstage/plugin-kubernetes-backend': patch
 ---
 
-Use AWS SDK V2 for Kubernetes authentication
+Use AWS SDK V2 instead of V3 for Kubernetes authentication

plugins/kubernetes-backend/src/kubernetes-auth-translator/AwsIamKubernetesAuthTranslator.test.ts

@@ -46,6 +46,6 @@ describe('AwsIamKubernetesAuthTranslator tests', () => {
       url: '',
       authProvider: 'aws',
     });
-    await expect(promise).rejects.toThrow('no credentials found');
+    await expect(promise).rejects.toThrow('no AWS credentials found.');
   });
 });

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

@@ -34,7 +34,7 @@ export class AwsIamKubernetesAuthTranslator
   async getBearerToken(clusterName: string): Promise<string> {
     const credentials = AWS.config.credentials;
     if (!(credentials instanceof Credentials)) {
-      throw new Error('no credentials found');
+      throw new Error('no AWS credentials found.');
     }
     await credentials.getPromise();
     const request = {