chore: post 6.3.0 release tasks (#2279)

Bump version of RDFLib and update docker `requirements.{in,txt}`.

docker/latest/requirements.in

@@ -1,4 +1,4 @@
 # This file is used for building a docker image of hte latest rdflib release. It
 # will be updated by dependabot when new releases are made.
-rdflib==6.2.0
+rdflib==6.3.0
 html5lib

docker/latest/requirements.txt

@@ -2,22 +2,19 @@
 # This file is autogenerated by pip-compile with Python 3.11
 # by the following command:
 #
-#    pip-compile --resolver=backtracking ./docker/latest/requirements.in
+#    pip-compile --resolver=backtracking docker/latest/requirements.in
 #
 html5lib==1.1
-    # via -r ./docker/latest/requirements.in
+    # via -r docker/latest/requirements.in
 isodate==0.6.1
     # via rdflib
 pyparsing==3.0.9
     # via rdflib
-rdflib==6.2.0
-    # via -r ./docker/latest/requirements.in
+rdflib==6.3.0
+    # via -r docker/latest/requirements.in
 six==1.16.0
     # via
     #   html5lib
     #   isodate
 webencodings==0.5.1
     # via html5lib
-
-# The following packages are considered to be unsafe in a requirements file:
-# setuptools

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "rdflib"
-version = "6.3.0"
+version = "6.4.0a0"
 description = """RDFLib is a Python library for working with RDF, \
 a simple yet powerful language for representing information."""
 authors = ["Daniel 'eikeon' Krech <eikeon@eikeon.com>"]