### 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
f'exclude galaxy.yml galaxy.yaml MANIFEST.json FILES.json {namespace}-{name}-*.tar.gz',
            'recursive-exclude tests/output **',
            'global-exclude /.* /__pycache__ *.pyc *.pyo *.bak *~ *.swp',
        ])
    display.vvv('Manifest Directives:')
    display.vvv(textwrap.indent('\n'.join(directives), '    '))
    u_collection_path = to_text(b_collection_path, errors='surrogate_or_strict')
    m = Manifest(u_collection_path)
    for directive in directives:
        try:
            m.process_directive(directive)
        except DistlibException as e:
            raise AnsibleError(f'Invalid manifest directive: {e}')
        except Exception as e:
            raise AnsibleError(f'Unknown error processing manifest directive: {e}')
    manifest = _make_manifest()
    for abs_path in m.sorted(wantdirs=True):
        rel_path = os.path.relpath(abs_path, u_collection_path)
        if os.path.isdir(abs_path):
            manifest_entry = _make_entry(rel_path, 'dir')
        else:
            manifest_entry = _make_entry(
                rel_path,
                'file',
                chksum_type='sha256',
                chksum=secure_hash(abs_path, hash_func=sha256)
            )
        manifest['files'].append(manifest_entry)
    return manifest
def _build_files_manifest_walk(b_collection_path, namespace, name, ignore_patterns):