This is kind of old news, I found references in late 1990's to tides influencing earthquakes around volcanos while doing a high school science project. The problem is the effect size is tiny. I thought it was a cool project, but someone else at that science fair did the same thing. I suspect a lot of people have looked into it over the years.

PS: USGS has a great database if earthquake data going back decades, it was downloadable as a ~100 meg txt file. Just remember there is a lot of different kinds of faults, and volcanos cause a lot of earthquakes. Modern version looks rate limited to 20,000 events though.