Python: Bump version to 3.10.5

* Installer build works and .exe from it runs.

.python-version

@@ -1 +1 @@
-3.10.4
+3.10.5

ChangeLog.md

@@ -9,7 +9,7 @@ produce the Windows executables and installer.
 
 ---
 
-* We now test against, and package with, Python 3.10.4.
+* We now test against, and package with, Python 3.10.5.
 
   **As a consequence of this we no longer support Windows 7.  
   This is due to
@@ -27,6 +27,13 @@ produce the Windows executables and installer.
 
 ---
 
+Pre-Release 5.4.1-rc1
+===
+
+* We now test against, and package with, Python 3.10.5.
+
+---
+
 Release 5.4.0
 ===