### Summary

With 22.04 right around the corner I've been testing some ansible on it to prepare for deploying 22.04 hosts. I've got everything worked out except for adding PPAs.

`apt_repository` is still adding the PPA keys to `/etc/apt/trusted.gpg` instead of placing individual key files in `/etc/apt/trusted.gpg.d/`.

`apt-add-repository` puts the individual key files in `/etc/apt/trusted.gpg.d`.

This move has been ongoing for many years with the previous behavior being deprecated and generating warnings.

### Issue Type

Bug Report

### Component Name

apt_repository

### Ansible Version

```console
$ ansible --version
ansible 2.10.8
  config file = None
  configured module search path = ['/home/wonko/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3/dist-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.10.4 (main, Apr  2 2022, 09:04:19) [GCC 11.2.0]
```


### Configuration

```console
$ ansible-config dump --only-changed
```


### OS / Environment

Ubuntu 22.04 (beta)

### Steps to Reproduce

<!--- Paste example playbooks or commands between quotes below -->
```yaml (paste below)
    - name: Add PPA
      apt_repository:
        repo: ppa:git-core/ppa
        state: present
```


### Expected Results

PPA is added to `/etc/apt/sources.list.d` and gpg key file to be place in `/etc/apt/trusted.gpg.d`

### Actual Results

```console
W: http://ppa.launchpad.net/git-core/ppa/ubuntu/dists/jammy/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
else:
            
            module.fail_json(msg="{0} must be installed and visible from {1}.".format(apt_pkg_name, sys.executable))
    if not repo:
        module.fail_json(msg='Please set argument \'repo\' to a non-empty value')
    if isinstance(distro, aptsources_distro.Distribution):
        sourceslist = UbuntuSourcesList(module, add_ppa_signing_keys_callback=get_add_ppa_signing_key_callback(module))
    else:
        module.fail_json(msg='Module apt_repository is not supported on target.')
    sourceslist_before = copy.deepcopy(sourceslist)
    sources_before = sourceslist.dump()
    try:
        if state == 'present':
            sourceslist.add_source(repo)
        elif state == 'absent':
            sourceslist.remove_source(repo)
    except InvalidSource as ex:
        module.fail_json(msg='Invalid repository string: %s' % to_native(ex))
    sources_after = sourceslist.dump()
    changed = sources_before != sources_after
    if changed and module._diff:
        diff = []
        for filename in set(sources_before.keys()).union(sources_after.keys()):
            diff.append({'before': sources_before.get(filename, ''),
                         'after': sources_after.get(filename, ''),
                         'before_header': (filename, '/dev/null')[filename not in sources_before],
                         'after_header': (filename, '/dev/null')[filename not in sources_after]})
    else:
        diff = {}