Log Message:
py-mercurial: update to 6.2.2.

Mercurial 6.2.2

    fsmonitor: restore functionality by moving to new dirstate APIs
    dirstate-v2: fix data file transaction handling (issue6730)
    rust: fix behavior when matching files with multiple includes
    rust: widen range of compatible crates to help with packaging
    rust-status: ignored directories are now correctly only listed if opted into
    automation: improve Windows packaging tooling
    contrib: update Mercurial install in bootstrap environment
    Remove flakiness in some tests
    Improve portability of certain tar uses in tests