Copyright in LICENSE file not detected (email issue?)

### Description

Copyright in the following file is not detected by ScanCode: https://github.com/videojs/vhs-utils/blob/main/LICENSE

Detected:
```
{
"path": "vhs-utils-main/LICENSE",
"type": "file",
"name": "LICENSE",
"status": "application-package",
"tag": "",
"extension": "",
"size": 1078,
"md5": "b5e2dbf622c44f93baf779123b4c1cc7",
"sha1": "cb191af7ec58c84aae40b49d4be2646239ab087d",
"sha256": "83c604241478b9801530198a4dd46fca5fc422015d5a01eeacf96162401ab31a",
"sha512": "",
"mime_type": "text/plain",
"file_type": "ASCII text",
"programming_language": "",
"is_binary": false,
"is_text": true,
"is_archive": false,
"is_media": false,
"is_key_file": true,
"detected_license_expression": "mit",
"detected_license_expression_spdx": "MIT",
"license_detections": [
...
],
"license_clues": [],
"percentage_of_license_text": 96.41,
"compliance_alert": "",
"copyrights": [],
"holders": [],
"authors": [],
"package_data": [],
"for_packages": [
"pkg:npm/%40videojs/vhs-utils@4.1.0?uuid=7803ef84-762b-4555-b5cf-0935ad59f1f5"
],
"emails": [
{
"email": "brandonocasey@gmail.com",
"end_line": 1,
"start_line": 1
}
],
"urls": [],
"extra_data": {}
}
```

Expected:
`brandonocasey ` or at least `brandonocasey` is returned as copyright

### How To Reproduce
scnacode.io config below

### System configuration
```
"tool_name": "scanpipe",
"tool_version": "34.2.0",
"other_tools": [
"pkg:pypi/scancode-toolkit@32.1.0"
```