chore(deps): bump eslint-config-etherpad to ^4.0.5

The publish workflow was failing with `ERR_PNPM_IGNORED_BUILDS`
because the frozen lockfile resolved eslint-config-etherpad to 4.0.4,
which pulls `unrs-resolver` via `eslint-import-resolver-typescript`.
pnpm 10's `strict-dep-builds` then refused to run its native
postinstall and aborted the install.

4.0.5 pins `eslint-import-resolver-typescript` to a version that drops
the `unrs-resolver` transitive entirely. Refresh the lockfile so the
publish step lands on a clean dependency tree.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: JohnMcLear

package.json

@@ -28,7 +28,7 @@
     "@types/mocha": "^10.0.10",
     "@types/node": "^25.6.0",
     "eslint": "^8.57.1",
-    "eslint-config-etherpad": "^4.0.4",
+    "eslint-config-etherpad": "^4.0.5",
     "mocha": "^11.7.5",
     "typescript": "^6.0.2"
   },