This release is based on LibreSSL 3.7.0:
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.7.0-relnotes.txt
No changes were made to libtls code, and yet its shared library
version has been bumped.
A release tarball for this version can be downloaded from:
https://causal.agency/libretls/libretls-3.7.0.tar.gz