### Summary

I'm trying to optimise my builds by avoiding unnecessary downloads.
ansible-galaxy install always downloads the latest version even if the existing collection already meets the requirements. This behaviour appears to be consistent with the documentation (https://docs.ansible.com/ansible/latest/galaxy/user_guide.html#installing-an-older-version-of-a-collection), but why has it been implemented to always download ?


e.g. I have
```
# /usr/local/lib/python3.8/site-packages/ansible_collections
Collection                    Version
----------------------------- -------
amazon.aws                    3.5.0  
...
```
and requirements.yml
```
---
collections:
  - name: amazon.aws
    version: '>=1.5.0'
```
if I run ansible-galaxy install -r requirements.yml I get amazon.aws 6.1.0 installed, even though 3.5.0 already meets my 1.5.0 requirement. I would expect nothing to happen because my requirements were already met.

### Issue Type

Feature Idea

### Component Name

ansible galaxy

### Additional Information

People who like the existing behaviour could perhaps use the recently added --upgrade switch to continue to get the upgrade to the lastest version.

### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
collections,  
        output_path,  
        apis,  
        no_deps,  
        allow_pre_release,  
        artifacts_manager,  
):  
    """Download Ansible collections as their tarball from a Galaxy server to the path specified and creates a requirements
    file of the downloaded requirements to be used for an install.
    :param collections: The collections to download, should be a list of tuples with (name, requirement, Galaxy Server).
    :param output_path: The path to download the collections to.
    :param apis: A list of GalaxyAPIs to query when search for a collection.
    :param validate_certs: Whether to validate the certificate if downloading a tarball from a non-Galaxy host.
    :param no_deps: Ignore any collection dependencies and only download the base requirements.
    :param allow_pre_release: Do not ignore pre-release versions when selecting the latest.
    """
    with _display_progress("Process download dependency map"):
        dep_map = _resolve_depenency_map(
            set(collections),
            galaxy_apis=apis,
            preferred_candidates=None,
            concrete_artifacts_manager=artifacts_manager,
            no_deps=no_deps,
            allow_pre_release=allow_pre_release,
            upgrade=False,
            
            include_signatures=False,
            offline=False,
        )