[Serverless][SecuritySolution][Endpoint] Re-enable scan and `releas…

…e` e2e tests (elastic#199416)

## Summary

Re-enable `scan` and `release` e2e tests on serverless that failed due
to the build artifacts page not being available momentarily.

closes elastic#172326
closes elastic#187932

### Flaky runner
-
https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/7352
x 150 (tries to run all tests)
-
https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/7388
x 150 (scan | release) (all 🟢 )

### Checklist
- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [x] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed

x-pack/plugins/security_solution/public/management/cypress/e2e/response_actions/response_console/release.cy.ts

@@ -27,8 +27,7 @@ import { enableAllPolicyProtections } from '../../../tasks/endpoint_policy';
 import { createEndpointHost } from '../../../tasks/create_endpoint_host';
 import { deleteAllLoadedEndpointData } from '../../../tasks/delete_all_endpoint_data';
 
-// FLAKY: https://github.com/elastic/kibana/issues/172326
-describe.skip('Response console', { tags: ['@ess', '@serverless'] }, () => {
+describe('Response console', { tags: ['@ess', '@serverless'] }, () => {
   let indexedPolicy: IndexedFleetEndpointPolicyResponse;
   let policy: PolicyData;
   let createdHost: CreateAndEnrollEndpointHostResponse;

x-pack/plugins/security_solution/public/management/cypress/e2e/response_actions/response_console/scan.cy.ts

@@ -41,8 +41,7 @@ describe(
       login();
     });
 
-    // FLAKY: https://github.com/elastic/kibana/issues/187932
-    describe.skip('Scan operation:', () => {
+    describe('Scan operation:', () => {
       const homeFilePath = Cypress.env('IS_CI') ? '/home/vagrant' : '/home';
 
       const fileContent = 'This is a test file for the scan command.';