Samba improvements

[jayjb]

Proposed changes

Improve the regex for samba to work for more versions.

Types of changes

What types of changes does your code introduce to this repository?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• Documentation Update

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code.

• Lint and unit tests pass locally with my changes (if applicable)
• I have run pre-commit (pre-commit in the repo)
• I have added necessary documentation (if appropriate)
• Linked to the relevant github issue or github discussion (Change in rsyslog log entry - No alerts for SMB service in opencanary console #226)