fix(tests): use importlib_metadata.version on 3.7 (#2482)

There is no `importlib.metadata` on Python 3.7

Author: Molkree

test/test_requirements.py

@@ -5,8 +5,14 @@
 import json
 import re
 import subprocess
+import sys
 import tempfile
-from importlib.metadata import version
+
+if sys.version_info >= (3, 8):
+    from importlib.metadata import version
+else:
+    from importlib_metadata import version
+
 from pathlib import Path
 
 ROOT_PATH = Path(__file__).parent.parent