fixup: make python bench smaller

Author: not-matthias

.github/workflows/codspeed.yml

@@ -18,7 +18,7 @@ jobs:
           - testdata/take_strings-aarch64 varbinview_non_null
           - echo Hello, World!
           - ls fib.py
-          - python3 fib.py
+          - python3 -c 'print(42 * 42)'
           - stress-ng --cpu 1 --timeout 1s
           - stress-ng --cpu 4 --timeout 1s
         valgrind: