chore(deps): bump rspress from 1.39.3 to 1.40.0

Bumps [rspress](https://github.com/web-infra-dev/rspress/tree/HEAD/packages/cli) from 1.39.3 to 1.40.0.
- [Release notes](https://github.com/web-infra-dev/rspress/releases)
- [Commits](https://github.com/web-infra-dev/rspress/commits/v1.40.0/packages/cli)

---
updated-dependencies:
- dependency-name: rspress
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -27,7 +27,7 @@
     "minimist": "^1.2.8",
     "rcedit": "^4.0.1",
     "react": "^18.3.1",
-    "rspress": "^1.39.3",
+    "rspress": "^1.40.0",
     "semver": "^7.6.3",
     "smol-toml": "^1.3.1",
     "typescript": "^5.7.3"