### 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_exclusive.add_argument('--force-with-deps', dest='force_with_deps', action='store_true', default=False,
                                       help="Force overwriting an existing {0} and its "
                                            "dependencies.".format(galaxy_type))
        valid_signature_count_help = 'The number of signatures that must successfully verify the collection. This should be a positive integer ' \
                                     'or -1 to signify that all signatures must be used to verify the collection. ' \
                                     'Prepend the value with + to fail if no valid signatures are found for the collection (e.g. +all).'
        ignore_gpg_status_help = 'A status code to ignore during signature verification (for example, NO_PUBKEY). ' \
                                 'Provide this option multiple times to ignore a list of status codes. ' \
                                 'Descriptions for the choices can be seen at L(https://github.com/gpg/gnupg/blob/master/doc/DETAILS#general-status-codes).'
        if galaxy_type == 'collection':
            install_parser.add_argument('-p', '--collections-path', dest='collections_path',
                                        default=self._get_default_collection_path(),
                                        help='The path to the directory containing your collections.')
            install_parser.add_argument('-r', '--requirements-file', dest='requirements',
                                        help='A file containing a list of collections to be installed.')
            install_parser.add_argument('--pre', dest='allow_pre_release', action='store_true',
                                        help='Include pre-release versions. Semantic versioning pre-releases are ignored by default')
            install_parser.add_argument('-U', '--upgrade', dest='upgrade', action='store_true', default=False,
                                        help='Upgrade installed collection artifacts. This will also update dependencies unless --no-deps is provided')
            install_parser.add_argument('--keyring', dest='keyring', default=C.GALAXY_GPG_KEYRING,
                                        help='The keyring used during signature verification')  
            install_parser.add_argument('--disable-gpg-verify', dest='disable_gpg_verify', action='store_true',
                                        default=C.GALAXY_DISABLE_GPG_VERIFY,
                                        help='Disable GPG signature verification when installing collections from a Galaxy server')
            install_parser.add_argument('--signature', dest='signatures', action='append',
                                        help='An additional signature source to verify the authenticity of the MANIFEST.json before '
                                             'installing the collection from a Galaxy server. Use in conjunction with a positional '
                                             'collection name (mutually exclusive with --requirements-file).')
            install_parser.add_argument('--required-valid-signature-count', dest='required_valid_signature_count', type=validate_signature_count,
                                        help=valid_signature_count_help, default=C.GALAXY_REQUIRED_VALID_SIGNATURE_COUNT)