PYTHON-5704 Skip free-threading for enterprise auth builds (#2687)

.evergreen/generated_configs/variants.yml

@@ -277,7 +277,7 @@ buildvariants:
       AUTH: auth
   - name: auth-enterprise-win64
     tasks:
-      - name: .test-standard-auth !.pypy .auth
+      - name: .test-standard-auth !.pypy .auth !.free-threaded
     display_name: Auth Enterprise Win64
     run_on:
       - windows-2022-latest-small

.evergreen/scripts/generate_config.py

@@ -223,7 +223,8 @@ def create_enterprise_auth_variants():
         if host == "macos":
             tasks = [".test-standard-auth !.pypy .auth !.free-threaded"]
         if host == "win64":
-            tasks = [".test-standard-auth !.pypy .auth"]
+            # https://jira.mongodb.org/browse/PYTHON-5704
+            tasks = [".test-standard-auth !.pypy .auth !.free-threaded"]
         variant = create_variant(tasks, display_name, host=host, expansions=expansions)
         variants.append(variant)
     return variants