Archive PNG artifacts in build workflow

Add step to archive PNG artifacts on Windows.

.github/workflows/build.yml

@@ -853,6 +853,15 @@ jobs:
           path: |
             gam*.exe
 
+      - name: Archive png artifacts
+        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # 7.0.0
+        if: runner.os == 'Windows'
+        with:
+          archive: true
+          if-no-files-found: ignore
+          path: |
+            *.png
+
       - name: Basic Tests build jobs only
         if: matrix.goal != 'test' && steps.cache-python-ssl.outputs.cache-hit != 'true'
         run: |