Update build_deploy.yml

Update version of upload-pages-artifact.
Currently the build_deploy action is failing. Trying this first

Author: douglm

.github/workflows/build_deploy.yml

@@ -46,7 +46,7 @@ jobs:
 
       - name: Upload artifact
         # Automatically uploads an artifact from the './_site' directory by default
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v3
 
   # Deployment job
   deploy: