Log Message:
security/ruby-vault: update to 0.18.1

0.18.0 (2023-09-14)

IMPROVEMENTS

* Added support for TLS v1.3 by replacing ssl_version with min_version.

0.18.1 (2023-09-14)

BUG FIXES

* Restored the ability to use this gem with older Ruby versions that do not
  have the OpenSSL::SSL::TLS1_2_VERSION constant.