fix: update package metadata and remove obsolete notebook

Addresses CodeRabbit review feedback:

1. Fixed api/package.json to have consistent repository references
   - Updated repository.url to deepnote/vscode-deepnote
   - Updated bugs.url to deepnote/vscode-deepnote
   - Now matches homepage URL

2. Removed .vscode/notebooks/CITestResults.ipynb
   - This notebook referenced a non-existent workflow (aggregate-test-results.yml)
   - The workflow does not exist in this repository

3. Included package-lock.json dependency updates
   - npm peer dependency changes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: Artmann

.vscode/notebooks/CITestResults.ipynb

@@ -15,10 +15,10 @@
     "homepage": "https://github.com/deepnote/vscode-deepnote",
     "repository": {
         "type": "git",
-        "url": "https://github.com/Microsoft/vscode-jupyter"
+        "url": "https://github.com/deepnote/vscode-deepnote"
     },
     "bugs": {
-        "url": "https://github.com/Microsoft/vscode-jupyter/issues"
+        "url": "https://github.com/deepnote/vscode-deepnote/issues"
     },
     "scripts": {
         "buildStable": "npm run clean && node ./stable.js",