Update blocknote (#6349)

Updating blocknote providing bugfixes & new block types

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Co-authored-by: Marie Stoppa <marie.stoppa@essec.edu>

package.json

@@ -6,8 +6,9 @@
     "@aws-sdk/client-lambda": "^3.614.0",
     "@aws-sdk/client-s3": "^3.363.0",
     "@aws-sdk/credential-providers": "^3.363.0",
-    "@blocknote/core": "^0.12.1",
-    "@blocknote/react": "^0.12.2",
+    "@blocknote/core": "^0.15.3",
+    "@blocknote/mantine": "^0.15.3",
+    "@blocknote/react": "^0.15.3",
     "@chakra-ui/accordion": "^2.3.0",
     "@chakra-ui/system": "^2.6.0",
     "@codesandbox/sandpack-react": "^2.13.5",