Bump @vscode/debugadapter from 1.64.0 to 1.68.0 in /extensions/ql-vscode

Bumps [@vscode/debugadapter](https://github.com/microsoft/vscode-debugadapter-node) from 1.64.0 to 1.68.0.
- [Commits](microsoft/vscode-debugadapter-node@v1.64.0...v1.68.0)

---
updated-dependencies:
- dependency-name: "@vscode/debugadapter"
  dependency-version: 1.68.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

extensions/ql-vscode/package-lock.json

@@ -2067,7 +2067,7 @@
     "@octokit/rest": "^22.0.1",
     "@vscode-elements/react-elements": "^0.9.0",
     "@vscode/codicons": "^0.0.44",
-    "@vscode/debugadapter": "^1.59.0",
+    "@vscode/debugadapter": "^1.68.0",
     "@vscode/debugprotocol": "^1.68.0",
     "ajv": "^8.18.0",
     "chokidar": "^3.6.0",