Add partial update of GDEW029T5 e-paper display (#8162)

Co-authored-by: Clyde Stubbs <2366188+clydebarrow@users.noreply.github.com>

tests/components/waveshare_epaper/common.yaml

@@ -459,6 +459,7 @@ display:
     reset_pin:
       allow_other_uses: true
       number: ${reset_pin}
+    full_update_every: 30
     lambda: |-
       it.rectangle(0, 0, it.get_width(), it.get_height());