ci/test: Fix esp_http_client const char* correction

components/esp_http_client/test/test_http_client.c

@@ -127,7 +127,7 @@ TEST_CASE("Username and password will not reset if new absolute URL doesnot spec
     // esp_http_client_set_username sets new username and thus invalidates the original one
     // which we still reference in the local variable `value` (better forget it)
     value = NULL;
-    esp_http_client_set_password(client, USERNAME);
+    esp_http_client_set_password(client, (char *)USERNAME);  // Need to cast the string literal (argument is not a const char*)
     //checks if username is set or not
     r = esp_http_client_get_username(client, &value);
     TEST_ASSERT_EQUAL(ESP_OK, r);