Add official Python 3.14 support with first release candidate (boto#3522)

Author: nateprewitt

.changes/next-release/enhancement-Python-78496.json

@@ -0,0 +1,5 @@
+{
+  "type": "enhancement",
+  "category": "Python",
+  "description": "Added provisional support for the upcoming Python 3.14 release"
+}

setup.py

@@ -68,5 +68,6 @@ def find_version(*file_paths):
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
         'Programming Language :: Python :: 3.13',
+        'Programming Language :: Python :: 3.14',
     ],
 )

tests/functional/leak/test_resource_leaks.py

@@ -22,8 +22,10 @@ class TestDoesNotLeakMemory(BaseClientDriverTest):
     # a substantial amount of time to the total test run time.
     INJECT_DUMMY_CREDS = True
     # We're making up numbers here, but let's say arbitrarily
-    # that the memory can't increase by more than 10MB.
-    MAX_GROWTH_BYTES = 12 * 1024 * 1024
+    # that the memory can't increase by more than 13MB.
+
+    # TODO: Attempt to bring this back to 10MB once Python 3.14 releases
+    MAX_GROWTH_BYTES = 13 * 1024 * 1024
 
     def test_create_single_client_memory_constant(self):
         self.cmd('create_client', 's3')