pytype: update check-pytype.sh to select target automatically We have python3.11 on CI, so we can run pytype targeting that version. On the other hand, we don't have python3.7 on CI anymore, so we can't run pytype for 3.7 anymore (interpreter not found). I think it's fine to make pytype select the appropriate target depending on the version of the interpreter it's running under.

--- a/contrib/check-pytype.sh	Tue Dec 19 22:54:52 2023 +0100
+++ b/contrib/check-pytype.sh	Mon Dec 18 15:40:48 2023 -0300
@@ -71,7 +71,7 @@
 
 # TODO: include hgext and hgext3rd
 
-pytype -V 3.7 --keep-going --jobs auto \
+pytype --keep-going --jobs auto \
     doc/check-seclevel.py hgdemandimport hgext mercurial \
     -x hgext/absorb.py \
     -x hgext/bugzilla.py \