Bump pyton version to 3.9.8

.github/workflows/windows-build.yml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v2.4.0
       - uses: actions/setup-python@v2.2.2
         with:
-          python-version: "3.9.7"
+          python-version: "3.9.8"
           architecture: "x86"
 
       - name: Install python tools

.python-version

@@ -1 +1 @@
-3.9.7
+3.9.8

ChangeLog.md

@@ -9,7 +9,7 @@ produce the Windows executables and installer.
 
 ---
 
-* We now test against, and package with, Python 3.9.7.
+* We now test against, and package with, Python 3.9.8.
 
   **As a consequence of this we no longer support Windows 7.  
   This is due to
@@ -27,6 +27,12 @@ produce the Windows executables and installer.
 
 ---
 
+Developers
+---
+
+* Now built using Python 3.9.8.
+
+
 Release 5.2.1
 ===