fix(html,react): move @videojs/skins to devDependencies

PR #698 (feat(skin)) added @videojs/skins to dependencies in both
packages/html and packages/react. Since @videojs/skins is not published
to npm, this causes install failures for consumers.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: decepulis

packages/html/package.json

@@ -89,13 +89,13 @@
   "dependencies": {
     "@videojs/core": "workspace:*",
     "@videojs/element": "workspace:*",
-    "@videojs/skins": "workspace:*",
     "@videojs/store": "workspace:*",
     "@videojs/utils": "workspace:*"
   },
   "devDependencies": {
     "@testing-library/dom": "^10.4.0",
     "@videojs/icons": "workspace:*",
+    "@videojs/skins": "workspace:*",
     "happy-dom": "^18.0.1",
     "tsdown": "^0.20.3",
     "typescript": "^5.9.3",

packages/react/package.json

@@ -47,13 +47,13 @@
   },
   "dependencies": {
     "@videojs/core": "workspace:*",
-    "@videojs/skins": "workspace:*",
     "@videojs/store": "workspace:*",
     "@videojs/utils": "workspace:*"
   },
   "devDependencies": {
     "@testing-library/react": "^16.3.0",
     "@videojs/icons": "workspace:*",
+    "@videojs/skins": "workspace:*",
     "@types/react": "^19.2.7",
     "jsdom": "^26.1.0",
     "react": "^19.2.1",