Rename workflow from 'Update Overview Deck' to 'Update Charters'

Signed-off-by: John Mertic <jmertic@linuxfoundation.org>

Author: jmertic

.github/workflows/build-charters.yml

@@ -1,4 +1,4 @@
-name: Update Overview Deck
+name: Update Charters
 on:
   workflow_dispatch:
   schedule:
@@ -13,7 +13,7 @@ jobs:
       with:
         persist-credentials: true
     - name: Set up Python
-      uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6.0.0
+      uses: actions/setup-python@v6
       with:
         python-version: '3.x'
         pip-install: -r requirements-build-charters.txt