Update try/catch syntax (#13732)

Update try/catch syntax to prepare for eslint migration

packages/twenty-server/src/engine/api/graphql/workspace-schema-builder/graphql-types/scalars/raw-json.scalar.ts

@@ -60,7 +60,7 @@ const stringify = (value: any): string => {
 const parseJSON = (value: string): object => {
   try {
     return JSON.parse(value);
-  } catch (e) {
+  } catch {
     throw new ValidationError(`Value is not valid JSON: ${value}`);
   }
 };