Change seftest.py from find_module to find_spec

Signed-off-by: Thorsten Kaufmann <[email protected]>

Author: instinct-vfx

src/rez/cli/selftest.py

@@ -56,7 +56,7 @@ def __call__(self, parser, namespace, values, option_string=None):
     prefix = "test_"
     for importer, name, ispkg in iter_modules([tests_dir]):
         if not ispkg and name.startswith(prefix):
-            module = importer.find_module(name).load_module(name)
+            module = importer.find_spec(name).loader.load_module(name)
             name_ = name[len(prefix):]
             all_module_tests.append(name_)
             tests.append((name_, module))