Update CHANGES.txt

Author: Avasam

CHANGES.txt

@@ -14,6 +14,8 @@ https://mhammond.github.io/pywin32_installers.html.
 Coming in build 308, as yet unreleased
 --------------------------------------
 
+* Dropped support for Python 3.7 (#2207, @Avasam)
+
 Build 307, released 2024-10-04
 ------------------------------
 ### Release process changes

Pythonwin/pywin/test/test_pywin.py

@@ -64,7 +64,7 @@ def tearDownClass(cls):
             win32api.PostQuitMessage()
             win32gui.PumpWaitingMessages()
             cls.app.ExitInstance()
-        sys.stdout, sys.stderr = cls.std_oe_orig  # py3.7
+        sys.stdout, sys.stderr = cls.std_oe_orig
 
     def test_1_pydocs_and_finddlg(self):
         mf = win32ui.GetMainFrame()