### 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
seen = set()
    for path in paths:
        namespace = path.parent.name
        name = path.name
        if namespace_filter and namespace != namespace_filter:
            continue
        if collection_filter and name != collection_filter:
            continue
        if dedupe:
            try:
                collection_path = files(f'ansible_collections.{namespace}.{name}')
            except ImportError:
                continue
            if collection_path in seen:
                continue
            seen.add(collection_path)
        else:
            collection_path = path
        b_collection_path = to_bytes(collection_path.as_posix())
        try:
            req = Candidate.from_dir_path_as_unknown(b_collection_path, artifacts_manager)
        except ValueError as val_err:
            display.warning(f'{val_err}')
            continue
        display.vvv(
            u"Found installed collection {coll!s} at '{path!s}'".
            format(coll=to_text(req), path=to_text(req.src))
        )
        yield req
def install(collection, path, artifacts_manager):