python3-jsonschema: upgrade 4.7.2 -> 4.9.0

python3-jsonschema: upgrade 4.7.2 -> 4.9.0

Changelog:
===========
-Fix relative $ref resolution when the base URI is a URN or other scheme (#544).
-pkgutil.resolve_name is now used to retrieve validators provided on the command
 line. This function is only available on 3.9+, so 3.7 and 3.8 (which are still
 supported) now rely on the pkgutil_resolve_name backport package. Note however
 that the CLI itself is due to be deprecated shortly in favor of check-jsonschema.
-best_match no longer traverses into anyOf and oneOf when all of the errors
 within them seem equally applicable. This should lead to clearer error messages
 in some cases where no branches were matched.

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>