ci: skip uv-lock on pre-commit.ci (no network there)

The uv-lock hook (added in #15111) resolves dependencies against PyPI, but
pre-commit.ci runs hooks in a sandbox with no network access, so it fails on
every PR with a DNS lookup error. Skip it on pre-commit.ci via the ci.skip
key; the hook still runs locally and in the uv-lock CI job.

Author: priya-sundaram-dev

.pre-commit-config.yaml

@@ -1,5 +1,8 @@
 ci:
   autoupdate_schedule: monthly
+  # uv-lock resolves dependencies from PyPI, but pre-commit.ci runs hooks with no
+  # network access, so it fails there. Skip it on pre-commit.ci; it still runs locally.
+  skip: [uv-lock]
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks