Currently test runner doesn't execute the unit tests of the ripemd160 module, so add it to the list. All other framework modules that contain unit tests are included, as can be easily checked via
$ git grep unittest.TestCase ./test/functional/test_framework/
This is a late follow-up to PR #23716 (commit ad3e9e1f214d739e098c6ebbd300da5df1026a44).