Run pre-commit autoupdate; update RDFLib type signatures

Due to a revision in RDFLib type signature requirements with 6.3.0, and
an overlapping-in-maintenance-period break in a `pre-commit` package,
this patch batches updates to fix two dependencies' issues at once.

This patch is built off of `main` because this could potentially be part
of a bugfix release.

References:
* RDFLib/rdflib#2283

.pre-commit-config.yaml

@@ -1,14 +1,14 @@
 repos:
   - repo: https://github.com/psf/black
-    rev: 22.10.0
+    rev: 23.1.0
     hooks:
       - id: black
   - repo: https://github.com/pycqa/flake8
-    rev: 5.0.4
+    rev: 6.0.0
     hooks:
       - id: flake8
   - repo: https://github.com/pycqa/isort
-    rev: 5.10.1
+    rev: 5.12.0
     hooks:
       - id: isort
         name: isort (python)

tests/as_import/test_as_import.py

@@ -16,6 +16,8 @@
 
 import case_utils.ontology
 import rdflib.plugins.sparql
+from rdflib import URIRef
+from rdflib.query import ResultRow
 
 _logger = logging.getLogger(os.path.basename(__file__))
 
@@ -63,8 +65,9 @@ def _test_as_import_query(graph_filename: str) -> None:
     results = graph.query(query)
     _logger.debug("len(results) = %d." % len(results))
     for result in results:
-        _logger.debug("result = %r." % result)
-        (n_process_object,) = result
+        assert isinstance(result, ResultRow)
+        assert isinstance(result[0], URIRef)
+        n_process_object = result[0]
         assert n_process_object is not None
         iris.add(n_process_object.toPython())
     assert len(iris) == 1