Update mercurial to version 6.5.2 / rev 187 via SR 1109477
    
    https://build.opensuse.org/request/show/1109477
    by user develop7 + anag+factory
    - Mercurial 6.5.2
      * hgweb: encode WSGI environment using the ISO-8859-1 codec
      * rhg: fix the bug where sparse config is interpreted as relglob instead of glob
      * gpg: fix an UnboundLocalError whenever using --force
      * transaction: fix __repr__() and make the default name bytes
      * setup: make the error "Unable to find a working hg binary" more informative
      * tests: avoid test environment affecting setup.py
      * run-tests: detect HGWITHRUSTEXT value (forwarded request 1109476 from develop7)