chore(deps): bump @excalidraw/excalidraw from 0.17.0 to 0.17.6

Bumps [@excalidraw/excalidraw](https://github.com/excalidraw/excalidraw) from 0.17.0 to 0.17.6.
- [Release notes](https://github.com/excalidraw/excalidraw/releases)
- [Commits](excalidraw/excalidraw@v0.17.0...v0.17.6)

---
updated-dependencies:
- dependency-name: "@excalidraw/excalidraw"
  dependency-version: 0.17.6
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

packages/rich-editor-demo/package.json

@@ -8,7 +8,7 @@
     "preview": "vite preview"
   },
   "dependencies": {
-    "@excalidraw/excalidraw": "0.17.0",
+    "@excalidraw/excalidraw": "0.17.6",
     "@haklex/rich-diff": "workspace:*",
     "@haklex/rich-editor": "workspace:*",
     "@haklex/rich-editor-ui": "workspace:*",

packages/rich-ext-excalidraw/package.json

@@ -25,7 +25,7 @@
     "react-dom": ">=19"
   },
   "dependencies": {
-    "@excalidraw/excalidraw": "0.17.0",
+    "@excalidraw/excalidraw": "0.17.6",
     "@haklex/rich-editor": "workspace:*",
     "@haklex/rich-editor-ui": "workspace:*",
     "@haklex/rich-headless": "workspace:*",