Replace deprected pk_reources with importlib.metadata (#94)

* Replace deprected pk_reources with importlib.metadata

* Apply suggestion from @epenet

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

---------

Co-authored-by: epenet <6771947+epenet@users.noreply.github.com>

Author: kalteslicht

pybotvac/version.py

@@ -1,6 +1,6 @@
-import pkg_resources
+from importlib.metadata import PackageNotFoundError, version
 
 try:
-    __version__ = pkg_resources.get_distribution("pybotvac").version
-except Exception:  # pylint: disable=broad-except
+    __version__ = version("pybotvac")
+except PackageNotFoundError:  # pragma: no cover - environment dependent
     __version__ = "unknown"