fix(deps): update dependency @portabletext/toolkit to ^2.0.18

Author: renovate[bot]

package.json

@@ -60,7 +60,7 @@
 	"browserslist": "extends @sanity/browserslist-config",
 	"dependencies": {
 		"@portabletext/react": "^3.2.3",
-		"@portabletext/toolkit": "^2.0.17",
+		"@portabletext/toolkit": "^2.0.18",
 		"@react-pdf/renderer": "^4.3.0",
 		"flat": "^6.0.1",
 		"lodash.merge": "^4.6.2",