add new default module mappings for py-healthcheck (#20597)

Title says it all. Just adding a new default module mapping.

Signed-off-by: Jason Barnett <[email protected]>

src/python/pants/backend/python/dependency_inference/default_module_mapping.py

@@ -175,6 +175,7 @@ def two_groups_hyphens_two_replacements_with_suffix(
     "progressbar2": ("progressbar",),
     "protobuf": ("google.protobuf",),
     "psycopg2-binary": ("psycopg2",),
+    "py-healthcheck": ("healthcheck",),
     "pycrypto": ("Crypto",),
     "pygithub": ("github",),
     "pygobject": ("gi",),