fix!: change peer of tailwindcss to ^3.1.0 (#23)

>[!WARNING]
>
> Please note that this is a **BREAKING CHANGE**.

As the test result of #21 shows that we does not support Tailwind CSS
v3.0.x. Since it does not have `config` option yet.

And v3.1.x and v3.2.y will be supported after #21 is merged.

package.json

@@ -45,7 +45,7 @@
   },
   "peerDependencies": {
     "@rsbuild/core": "^1.1.0",
-    "tailwindcss": "^3"
+    "tailwindcss": "^3.1.0"
   },
   "peerDependenciesMeta": {
     "@rsbuild/core": {