Update dependency @prezly/sdk to v23.20.0

Author: renovate[bot]

package.json

@@ -33,7 +33,7 @@
     "@playwright/test": "^1.50.1",
     "@prezly/analytics-nextjs": "4.3.0",
     "@prezly/content-renderer-react-js": "0.42.0",
-    "@prezly/sdk": "23.17.0",
+    "@prezly/sdk": "23.20.0",
     "@prezly/story-content-format": "0.69.0",
     "@prezly/theme-kit-nextjs": "10.2.3",
     "@prezly/uploadcare": "2.5.0",