Bump Python ceiling to newest version, floor past EOL

Signed-off-by: Alex Nelson <alexander.nelson@nist.gov>

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         java-version: [11, 18]
-        python-version: [3.7, "3.10"]
+        python-version: [3.8, "3.12"]
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2

setup.cfg

@@ -11,15 +11,16 @@ license_file = LICENSE
 classifiers =
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
+    Programming Language :: Python :: 3.12
 
 [options]
 packages = find:
-python_requires = >=3.7
+python_requires = >=3.8
 
 [options.entry_points]
 console_scripts =
-    rdf-toolkit-normalizer = pre_commit_hooks.normalize_rdf:main
+    rdf-toolkit-normalizer = pre_commit_hooks.normalize_rdf:main