test(user-picker): fix PHPUnit 12 dataprovider deprecations

[joshtrichards]

• Resolves: #

Summary

Eliminates PHPUnit deprecation notices (due to @dataProvider use) that were introduced via #57539:

There were 5 PHPUnit test runner deprecations:

1) Metadata found in doc-comment for method OCA\UserPicker\Reference\ProfilePickerReferenceProviderTest::testResolveReference(). Metadata in doc-comments is deprecated and will no longer be supported in PHPUnit 12. Update your test code to use attributes instead.

2) Metadata found in doc-comment for method OCA\UserPicker\Reference\ProfilePickerReferenceProviderTest::testMatchReference(). Metadata in doc-comments is deprecated and will no longer be supported in PHPUnit 12. Update your test code to use attributes instead.

3) Metadata found in doc-comment for method OCA\UserPicker\Reference\ProfilePickerReferenceProviderTest::testGetCacheKey(). Metadata in doc-comments is deprecated and will no longer be supported in PHPUnit 12. Update your test code to use attributes instead.

4) Metadata found in doc-comment for method OCA\UserPicker\Reference\ProfilePickerReferenceProviderTest::testGetObjectId(). Metadata in doc-comments is deprecated and will no longer be supported in PHPUnit 12. Update your test code to use attributes instead.

5) Metadata found in doc-comment for method OCA\UserPicker\Reference\ProfilePickerReferenceProviderTest::testGetOpenStreetLocationUrl(). Metadata in doc-comments is deprecated and will no longer be supported in PHPUnit 12. Update your test code to use attributes instead.

TODO

• ...

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)