Update dependency tailwindcss to v3.0.21

Author: renovate-bot

package.json

@@ -82,7 +82,7 @@
     "rollup-plugin-peer-deps-external": "2.2.4",
     "rollup-plugin-postcss": "4.0.2",
     "rollup-plugin-terser": "7.0.2",
-    "tailwindcss": "3.0.20",
+    "tailwindcss": "3.0.21",
     "ts-jest": "27.1.3",
     "tslib": "2.3.1",
     "ttypescript": "1.5.13",