BUG: Corrected suggestions by pre-commit (pandas-dev#39701)

Author: alexprincel

pandas/tests/util/test_show_versions.py

@@ -65,7 +65,7 @@ def test_show_versions(capsys, as_json, tmpdir):
         # make sure that the file was created
         assert os.path.exists(as_json)
 
-        with open(as_json, "r") as fd:
+        with open(as_json) as fd:
             contents = fd.readlines()
             str_contents = "".join(contents)