Thanks for the great work curating and maintaining the benchmark.
The update in test case ee0827d4c9bf80982241e8c3559dceb8b39063e4 from PR codehaus-plexus/plexus-archiver#259 does not look like a "breaking update".
The bot -- in this case snyk -- proposes a downgrade to a 17-year-old version of a given dependency.
commons-io 2.11.0 --> 20030203.000550
It looks like the version comparison in the bot was buggy, but not an actual dependency update PR.
Thus, I consider this test case insufficient for the benchmark.
Nevertheless, if the criteria for the benchmark are that a PR has been generated by a bot, the test case would be valid.