fix(deps): update dependency scratch-paint to v4.1.19

Author: renovate[bot]

package-lock.json

@@ -118,7 +118,7 @@
     "scratch-audio": "2.0.268",
     "scratch-blocks": "1.2.5",
     "scratch-l10n": "6.1.25",
-    "scratch-paint": "4.1.18",
+    "scratch-paint": "4.1.19",
     "scratch-render-fonts": "1.0.252",
     "scratch-storage": "5.0.10",
     "startaudiocontext": "1.2.1",