chore: address review comments

Author: mstruebing

src/config.ts

@@ -545,7 +545,7 @@ export class KubeConfig implements SecurityAuthentication {
             } else {
                 throw new Error('Unsupported proxy type');
             }
-        } else if (cluster && cluster.server && cluster.server.startsWith('http:')) {
+        } else if (cluster?.server?.startsWith('http:')) {
             agent = new http.Agent(agentOptions);
         } else {
             agent = new https.Agent(agentOptions);

src/config_test.ts

@@ -299,7 +299,7 @@ describe('KubeConfig', () => {
         });
     });
 
-    describe.only('applyHTTPSOptions', () => {
+    describe('applyHTTPSOptions', () => {
         it('should apply tls-server-name to https.RequestOptions', async () => {
             const kc = new KubeConfig();
             kc.loadFromFile(kcTlsServerNameFileName);