count is now a reserved name

With recent snakemake version, I get the following error:

AttributeError in line 406 of /ceph-recherche/users/bordron-p-1/tmp/srp-pipeline/Snakefile:
invalid name for input, output, wildcard, params or log: count is reserved for internal use
  File "/ceph-recherche/users/bordron-p-1/tmp/srp-pipeline/Snakefile", line 406, in <module>

Tested with:

$ snakemake --version
5.18.1