[Entity Store] Change code ownership to the new @elastic/entity-store (elastic#226351)

## Summary

Change code owners of entity store to @elastic/entity-store team


### Checklist

Check the PR satisfies following conditions. 

Reviewers should verify this PR satisfies this list as well.

- [x] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/src/platform/packages/shared/kbn-i18n/README.md)
- [x]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [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] If a plugin configuration key changed, check if it needs to be
allowlisted in the cloud and added to the [docker
list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)
- [x] This was checked for breaking HTTP API changes, and any breaking
changes have been approved by the breaking-change committee. The
`release_note:breaking` label should be applied in these situations.
- [x] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed
- [x] The PR description includes the appropriate Release Notes section,
and the correct `release_note:*` label is applied per the
[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)
- [x] Review the [backport
guidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)
and apply applicable `backport:*` labels.

### Identify risks

Does this PR introduce any risks? For example, consider risks like hard
to test bugs, performance regression, potential of data loss.

- No

### Tickets

- Relates to elastic/security-team#12748

Author: romulets

.github/CODEOWNERS

@@ -2404,6 +2404,13 @@ x-pack/test/security_solution_api_integration/test_suites/sources @elastic/secur
 
 x-pack/solutions/security/plugins/security_solution/public/asset_inventory @elastic/kibana-cloud-security-posture
 
+## Security Solution sub teams - Security Entity Store
+x-pack/platform/packages/shared/kbn-entities-schema/src/schema/v1 @elastic/entity-store
+x-pack/platform/plugins/shared/entity_manager/server/lib/entities @elastic/entity-store
+x-pack/platform/plugins/shared/entity_manager/server/lib/auth @elastic/entity-store
+x-pack/solutions/security/plugins/security_solution/server/lib/entity_analytics/entity_store @elastic/entity-store
+x-pack/test/security_solution_api_integration/test_suites/entity_analytics/entity_store/ @elastic/entity-store
+
 ## Security Solution sub teams - Threat Hunting
 
 /x-pack/platform/plugins/shared/stack_connectors/common/thehive @elastic/security-threat-hunting
@@ -2698,9 +2705,6 @@ x-pack/test/security_solution_cypress/cypress/e2e/entity_analytics @elastic/secu
 x-pack/solutions/security/plugins/security_solution/public/flyout/entity_details @elastic/security-entity-analytics
 x-pack/solutions/security/plugins/security_solution/common/api/entity_analytics @elastic/security-entity-analytics
 x-pack/solutions/security/packages/navigation/src/navigation_tree/entity_analytics_navigation_tree.ts @elastic/security-entity-analytics
-x-pack/platform/packages/shared/kbn-entities-schema/src/schema/v1 @elastic/entity-store
-x-pack/platform/plugins/shared/entity_manager/server/lib/entities @elastic/entity-store
-x-pack/platform/plugins/shared/entity_manager/server/lib/auth @elastic/entity-store
 
 ## Security Solution sub teams - GenAI
 x-pack/test/security_solution_api_integration/test_suites/genai @elastic/security-generative-ai