Add cargo update to maintenance.sh for up-to-date checks

Author: frisoft

maintenance.sh

@@ -1,6 +1,11 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
+echo "======================================"
+echo "Update Cargo.lock"
+cargo update
+
+echo
 echo "======================================"
 echo "Find unused dependencies in Cargo.toml"
 cargo machete .