pybind/mgr/dashboard: do not use distutils.version.StrictVersion

pybind/mgr/dashboard: do not use distutils.version.StrictVersion

replace `distutils.version.StrictVersion` with
`pkg_resources.parse_version()`

as the former is deprecated, see https://peps.python.org/pep-0632/.
let's use `pkg_resources` instead. this change also addresses
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1010894.
we have this issue when testing with an ubuntu jammy test node.
see https://bugs.launchpad.net/ubuntu/+source/ceph/+bug/1967139

Signed-off-by: Kefu Chai <tchaikov@gmail.com>
(cherry picked from commit 075b31c1c763286065f13be87c6ba987529b1206)

Conflicts:
	debian/ceph-mgr-dashboard.requires: add the runtime requirement
        to debian/control instead.
	src/mypy-constrains.txt: not backported (too new for pacific)
	src/pybind/mgr/dashboard/requirements.txt: trivial resolution
	src/pybind/mgr/tox.ini: not backported (too new for pacific)