### 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
'Failed to install collection {coll!s} but skipping '
                        'due to --ignore-errors being set. Error: {error!s}'.
                        format(
                            coll=to_text(concrete_coll_pin),
                            error=to_text(err),
                        )
                    )
                else:
                    raise
def validate_collection_name(name):  
    """Validates the collection name as an input from the user or a requirements file fit the requirements.
    :param name: The input name with optional range specifier split by ':'.
    :return: The input value, required for argparse validation.
    """
    collection, dummy, dummy = name.partition(':')
    if AnsibleCollectionRef.is_valid_collection_name(collection):
        return name
    raise AnsibleError("Invalid collection name '%s', "
                       "name must be in the format <namespace>.<collection>. \n"
                       "Please make sure namespace and collection name contains "
                       "characters from [a-zA-Z0-9_] only." % name)
def validate_collection_path(collection_path):  
    """Ensure a given path ends with 'ansible_collections'
    :param collection_path: The path that should end in 'ansible_collections'
    :return: collection_path ending in 'ansible_collections' if it does not already.
    """
    if os.path.split(collection_path)[1] != 'ansible_collections':
        return os.path.join(collection_path, 'ansible_collections')
    return collection_path
def verify_collections(