support gevent up to python 3.13

Author: blink1073

.evergreen/generated_configs/variants.yml

@@ -330,17 +330,9 @@ buildvariants:
     tags: []
 
   # Green framework tests
-  - name: green-eventlet-rhel8
-    tasks:
-      - name: .test-standard .sync
-    display_name: Green Eventlet RHEL8
-    run_on:
-      - rhel87-small
-    expansions:
-      GREEN_FRAMEWORK: eventlet
   - name: green-gevent-rhel8
     tasks:
-      - name: .test-standard .sync
+      - name: .test-standard .sync !.python-3.14
     display_name: Green Gevent RHEL8
     run_on:
       - rhel87-small

.evergreen/scripts/generate_config.py

@@ -296,8 +296,8 @@ def create_stable_api_variants():
 def create_green_framework_variants():
     variants = []
     host = DEFAULT_HOST
-    for framework in ["eventlet", "gevent"]:
-        tasks = [".test-standard .sync"]
+    for framework in ["gevent"]:
+        tasks = [".test-standard .sync !.python-3.14"]
         expansions = dict(GREEN_FRAMEWORK=framework)
         display_name = get_variant_name(f"Green {framework.capitalize()}", host)
         variant = create_variant(tasks, display_name, host=host, expansions=expansions)