fix: binary mem (#2695)

### Description

<!--Add a description of your PR here-->

### QC
<!-- Make sure that you can tick the boxes below. -->

* [ ] The PR contains a test case for the changes or the changes are
already covered by an existing test case.
* [ ] The documentation (`docs/`) is updated to reflect the changes or
this is not necessary (e.g. if the change does neither modify the
language nor the behavior or functionalities of Snakemake).

snakemake/resources.py

@@ -619,7 +619,7 @@ def infer_resources(name, value, resources: dict):
             raise WorkflowError(
                 f"Cannot parse mem or disk value into size in MB for setting {inferred_name} resource: {value}"
             )
-        resources[inferred_name] = max(int(round(in_bytes / 1000 / 1000)), 1)
+        resources[inferred_name] = max(int(round(in_bytes / 1024 / 1024)), 1)
     elif name == "runtime" and isinstance(value, str):
         try:
             resources["runtime"] = max(int(round(parse_timespan(value) / 60)), 1)