Bump @bookshop/live from 3.12.0 to 3.13.0

Bumps @bookshop/live from 3.12.0 to 3.13.0.

---
updated-dependencies:
- dependency-name: "@bookshop/live"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -23,7 +23,7 @@
   "devDependencies": {
     "@bookshop/jekyll-engine": "3.12.0",
     "@bookshop/browser": "3.12.0",
-    "@bookshop/live": "3.12.0",
+    "@bookshop/live": "3.13.0",
     "npm-run-all": "^4.1.5"
   },
   "dependencies": {