Python 3.9 deprecated parser and symbol modules:

https://docs.python.org/3/whatsnew/3.9.html#deprecated

`/usr/lib/rpm/python3.req.py` warns about this:
```
find-requires: running scripts (cpp,debuginfo,files,lib,pam,perl,pkgconfig,pkgconfiglib,python,python3,rpmlib,shebang,shell,static,symlinks,systemd-services)
/usr/lib/rpm/python3.req.py:6: DeprecationWarning: The parser module is deprecated and will be removed in future versions of Python
  import parser, symbol, token, types
/usr/lib/rpm/python3.req.py:6: DeprecationWarning: The symbol module is deprecated and will be removed in future versions of Python
  import parser, symbol, token, types
```