fix(keyringctl): restore cwd before deleting the temporary working dir

This avoids potential issues with wrapped runtime like ipython or pdb
that try to invoke functions at exit and access the current working
directory, which will ultimately lead to an error in case we deleted it
before changing the current working directory.

keyringctl

@@ -1074,9 +1074,8 @@ if __name__ == '__main__':
     # temporary working directory that gets auto cleaned
     with TemporaryDirectory() as tempdir:
         working_dir = Path(tempdir)
-        chdir(working_dir)
         debug(f'Working directory: {working_dir}')
-
+        with cwd(working_dir):
             if args.subcommand in ["convert", "import"]:
                 if args.target:
                     args.target.mkdir(parents=True, exist_ok=True)