[freeipa PR#6030][opened] ipatests: update expected error message for openssl verify

[flo-renaud]

   URL: https://github.com/freeipa/freeipa/pull/6030
Author: flo-renaud
 Title: #6030: ipatests: update expected error message for openssl verify
Action: opened

PR body:
"""
The test TestIpaHealthCheckWithExternalCA::test_ipahealthcheck_ipaopensslchainvalidation
needs to be adapted with the new error message returned by
openssl verify when the provided certificate file does not exist.
The message changed with openssl3.

Fixes: https://pagure.io/freeipa/issue/8999
"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/6030/head:pr6030
git checkout pr6030