Update dependency @ota-meshi/eslint-plugin-svelte to ^0.21.0 (#131)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -50,7 +50,7 @@
     },
     "devDependencies": {
         "@ota-meshi/eslint-plugin": "^0.10.0",
-        "@ota-meshi/eslint-plugin-svelte": "^0.20.0",
+        "@ota-meshi/eslint-plugin-svelte": "^0.21.0",
         "@types/benchmark": "^2.1.1",
         "@types/eslint": "^8.0.0",
         "@types/eslint-scope": "^3.7.0",