Update dependency @blocknote/core to ^0.38.0

Author: renovate[bot]

packages/block-editor/package-lock.json

@@ -15,7 +15,7 @@
     "author": "",
     "license": "ISC",
     "dependencies": {
-        "@blocknote/core": "^0.37.0",
+        "@blocknote/core": "^0.38.0",
         "@blocknote/react": "^0.37.0",
         "@blocknote/shadcn": "^0.37.0",
         "axios": "^1.11.0",