Fixed bug in cfp_setup fixture which caused failures in kem and dsa CLI tests

Author: aabmets

tests/test_cli/conftest.py

@@ -63,6 +63,8 @@ def closure(algorithm: str) -> t.Generator[CryptoFilePaths, t.Any, None]:
         cwd = os.getcwd()
         os.chdir(alt_tmp_path)
         yield cfp
+        for item in alt_tmp_path.iterdir():
+            item.unlink()
         os.chdir(cwd)
     return closure