Support environment markers in requires fields (#12711)

pyrightconfig.json

@@ -6,6 +6,9 @@
         "stubs",
     ],
     "exclude": [
+        // Stubs that don't work in all Python versions
+        "stubs/seaborn",
+        "stubs/shapely",
         // test cases use a custom config file
         "**/@tests/test_cases",
     ],