python: actually fix python 3.8 compatibility (#1973)

importlib.resources.files also didn't exist until python 3.9.

Fixes #1972

Signed-off-by: Jared Van Bortel <jared@nomic.ai>

gpt4all-bindings/python/setup.py

@@ -86,7 +86,11 @@ setup(
     ],
     python_requires='>=3.8',
     packages=find_packages(),
-    install_requires=['requests', 'tqdm'],
+    install_requires=[
+        'requests',
+        'tqdm',
+        'importlib_resources; python_version < "3.9"',
+    ],
     extras_require={
         'dev': [
             'pytest',