chore(repo): expose PR sync script (#2595)

package.json

@@ -31,6 +31,7 @@
     "merge-pr": "bash scripts/shortcuts/review/merge.sh",
     "mock:api": "node scripts/mock-api-server.mjs",
     "pr:checklist": "node scripts/check-pr-checklist.mjs",
+    "pr:sync-main": "node scripts/merge-main-into-open-prs.mjs",
     "rabbit": "bash scripts/rabbit/cli.sh",
     "reset": "bash scripts/shortcuts/ws-reset.sh",
     "deep-work": "bash scripts/deep-work/cli.sh",