Mamba fails to extract the latest package on macos

Mamba fails with
```
critical libmamba Pathname can't be converted from UTF-8 to current locale.
error libmamba Error opening for reading "/Users/runner/miniforge3/pkgs/python-libarchive-c-5.0-py310h2ec42d9_0/info/index.json": No such file or directory
error libmamba Error when extracting package: [json.exception.parse_error.101] parse error at line 1, column 1: syntax error while parsing value - unexpected end of input; expected '[', '{', or a literal
```

The contents of the package include
```
$ ls -1 pkgs/python-libarchive-c-5.0-py311h6eed73b_0/info/test/tests/data/
flags.tar
special.tar
tar_relative.tar
testtar.README
testtar.tar
testtar.tar.json
unicode2.zip
unicode2.zip.json
unicode.tar
unicode.tar.json
unicode.zip
unicode.zip.json
프로그램.README
프로그램.zip
프로그램.zip.json
```