Add id to connector indices + dynamic: false

[artem-shelkovnikov]

Part of https://github.com/elastic/enterprise-search-team/issues/3729

Connected to issue https://github.com/elastic/enterprise-search-team/issues/3729

Updating connectors protocol to reflect the changes in the PR:

• adding "dynamic: false" to both indices

[github-actions[bot]]

💔 Failed to create backport PR(s)

The backport operation could not be completed due to the following error: There are no branches to backport to. Aborting.

The backport PRs will be merged automatically after passing CI.

To backport manually run: backport --pr 526 --autoMerge --autoMergeMethod squash