long execution for mutation testing

Author: tomato42

.github/workflows/ci.yml

@@ -467,7 +467,7 @@ jobs:
           cp sessions/session-${{ matrix.name }}.sqlite session.sqlite
           systemd-run --user --scope -p MemoryMax=2G -p MemoryHigh=2G cosmic-ray exec cosmic-ray.toml session.sqlite &
           cosmic_pid=$!
-          for i in $(seq 1 2); do
+          for i in $(seq 1 10); do
             echo $i
             sleep 60
           done