enhance: Remove version from docker compose file

[richzw]

When the latest docker (version 25.0.3) is used to start milvus, the warning message comes up

WARN[0000] docker-compose.yml:version is obsolete

---

Per this doc https://github.com/compose-spec/compose-spec/blob/master/spec.md#version-top-level-element-obsolete

The top-level version property is defined by the Compose Specification for backward compatibility. It is only informative you'll receive a warning message that it is obsolete if used.

Compose doesn't use version to select an exact schema to validate the Compose file, but prefers the most recent schema when it's implemented.

And there is one related issue docker/compose#11628

[sre-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: richzw
To complete the pull request process, please assign congqixia after the PR has been reviewed.
You can assign the PR to them by writing /assign @congqixia in a comment when ready.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• deployments/OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[sre-ci-robot]

Welcome @richzw! It looks like this is your first PR to milvus-io/milvus 🎉