### 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
"""
        Install one or more roles(``ansible-galaxy role install``), or one or more collections(``ansible-galaxy collection install``).
        You can pass in a list (roles or collections) or use the file
        option listed below (these are mutually exclusive). If you pass in a list, it
        can be a name (which will be downloaded via the galaxy API and github), or it can be a local tar archive file.
        :param artifacts_manager: Artifacts manager.
        """
        install_items = context.CLIARGS['args']
        requirements_file = context.CLIARGS['requirements']
        collection_path = None
        signatures = context.CLIARGS.get('signatures')
        if signatures is not None:
            signatures = list(signatures)
        if requirements_file:
            requirements_file = GalaxyCLI._resolve_path(requirements_file)
        two_type_warning = "The requirements file '%s' contains {0}s which will be ignored. To install these {0}s " \
                           "run 'ansible-galaxy {0} install -r' or to install both at the same time run " \