build(deps-dev): Bump watchpack from 2.0.1 to 2.1.0 in /docs (#5768)

Bumps [watchpack](https://github.com/webpack/watchpack) from 2.0.1 to 2.1.0.
- [Release notes](https://github.com/webpack/watchpack/releases)
- [Commits](https://github.com/webpack/watchpack/compare/v2.0.1...v2.1.0)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/package-lock.json

@@ -10431,9 +10431,9 @@
       }
     },
     "watchpack": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-2.0.1.tgz",
-      "integrity": "sha512-vO8AKGX22ZRo6PiOFM9dC0re8IcKh8Kd/aH2zeqUc6w4/jBGlTy2P7fTC6ekT0NjVeGjgU2dGC5rNstKkeLEQg==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-2.1.0.tgz",
+      "integrity": "sha512-UjgD1mqjkG99+3lgG36at4wPnUXNvis2v1utwTgQ43C22c4LD71LsYMExdWXh4HZ+RmW+B0t1Vrg2GpXAkTOQw==",
       "dev": true,
       "requires": {
         "glob-to-regexp": "^0.4.1",

docs/package.json

@@ -7,7 +7,7 @@
     "vuepress-theme-cosmos": "^1.0.178"
   },
   "devDependencies": {
-    "watchpack": "^2.0.1"
+    "watchpack": "^2.1.0"
   },
   "scripts": {
     "preserve": "./pre.sh",