### 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
if any(b_item == b_path for b_path in b_ignore_dirs) or \
                        any(fnmatch.fnmatch(b_rel_path, b_pattern) for b_pattern in b_ignore_patterns):
                    display.vvv("Skipping '%s' for collection build" % to_text(b_abs_path))
                    continue
                if os.path.islink(b_abs_path):
                    b_link_target = os.path.realpath(b_abs_path)
                    if not _is_child_path(b_link_target, b_top_level_dir):
                        display.warning("Skipping '%s' as it is a symbolic link to a directory outside the collection"
                                        % to_text(b_abs_path))
                        continue
                manifest['files'].append(_make_entry(rel_path, 'dir'))
                if not os.path.islink(b_abs_path):
                    _walk(b_abs_path, b_top_level_dir)
            else:
                if any(fnmatch.fnmatch(b_rel_path, b_pattern) for b_pattern in b_ignore_patterns):
                    display.vvv("Skipping '%s' for collection build" % to_text(b_abs_path))
                    continue
                
                
                manifest['files'].append(
                    _make_entry(
                        rel_path,
                        'file',
                        chksum_type='sha256',
                        chksum=secure_hash(b_abs_path, hash_func=sha256)
                    )
                )
    _walk(b_collection_path, b_collection_path)
    return manifest
def _build_manifest(namespace, name, version, authors, readme, tags, description, license_file,