Upgrade to 1.48.1
Take over as maintainer
in pkg-message:

• Correct the .env.example
• Add ./validate

1.48 was skipped because of time issue

Release notes:
1.48.1 Fix for some OS loading issues.

https://github.com/librenms/librenms/releases/tag/1.48.1

1.48 https://github.com/librenms/librenms/releases/tag/1.48

PR: 235537
Submitted by: Laszlo Danielisz <lacibsd@gmail.com>
Approved by: bofh@FreeBSD.org (maintainer)