chore: bump blocksuite (#6666)

## Features
- https://github.com/toeverything/BlockSuite/pull/6842 @donteatfriedrice
- https://github.com/toeverything/BlockSuite/pull/6836 @regischen

## Bugfix
- https://github.com/toeverything/BlockSuite/pull/6837 @pengx17
- https://github.com/toeverything/BlockSuite/pull/6803 @lawvs
- https://github.com/toeverything/BlockSuite/pull/6843 @donteatfriedrice
- https://github.com/toeverything/BlockSuite/pull/6838 @donteatfriedrice
- https://github.com/toeverything/BlockSuite/pull/6834 @regischen
- https://github.com/toeverything/BlockSuite/pull/6835 @donteatfriedrice
- https://github.com/toeverything/BlockSuite/pull/6831 @pengx17
- https://github.com/toeverything/BlockSuite/pull/6827 @golok727
- https://github.com/toeverything/BlockSuite/pull/6828 @regischen

## Refactor

## Misc

packages/frontend/graphql/src/schema.ts

@@ -346,7 +346,7 @@ export type GetCopilotHistoriesQuery = {
           role: string;
           content: string;
           attachments: Array<string> | null;
-          createdAt: string | null;
+          createdAt: string;
         }>;
       }>;
     };