fix: set rocket_cors log level to Warn (fixes ActivityWatch/activitywatch#975)

Author: ErikBjare

aw-server/src/logging.rs

@@ -49,6 +49,9 @@ pub fn setup_logger(module: &str, testing: bool, verbose: bool) -> Result<(), fe
     if !is_debug {
         dispatch = dispatch
             .level_for("rocket", log::LevelFilter::Warn)
+            // rocket_cors has a lot of unhelpful info messages that spam the log on every request
+            // https://github.com/ActivityWatch/activitywatch/issues/975
+            .level_for("rocket_cors", log::LevelFilter::Warn)
             .level_for("_", log::LevelFilter::Warn) // Rocket requests
             .level_for("launch_", log::LevelFilter::Warn); // Rocket config info
     }