Update dependency @convex-dev/workpool to v0.2.19-alpha.3 (#143)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -59,7 +59,7 @@
     "async-channel": "^0.2.0"
   },
   "devDependencies": {
-    "@convex-dev/workpool": "0.2.19-alpha.2",
+    "@convex-dev/workpool": "0.2.19-alpha.3",
     "@edge-runtime/vm": "5.0.0",
     "@eslint/eslintrc": "3.3.1",
     "@eslint/js": "9.37.0",