Add CI and/or consume fleet-examples in E2E tests

[viccuad]

Currently, we need to manually test the dependency bumps prompted by renovatebot, for kubewarden itself and charts such as cert-manager, opentelemetry, etc.

Acceptance criteria

either:

• Have tests that are run on each PR, consuming the changes of the PR, and tells us if the PR breaks the fleet-examples deployment (preferable).
  or:
• Consume fleet-example in some E2E tests (like kubewarden-ui e2e tests or kubewarden-end-to-end-tests), and ensure they are periodically run. Then, we could open PRs to revert bumps of the dependencies that happened to fleet-example.