⚡ Simplify more property types in credentials classes (#2211)

* ⚡ Simplify more property types

* 👕 Fix lint

packages/nodes-base/credentials/FormstackOAuth2Api.credentials.ts

@@ -1,6 +1,6 @@
 import {
 	ICredentialType,
-	NodePropertyTypes,
+	INodeProperties,
 } from 'n8n-workflow';
 
 const scopes: string[] = [];
@@ -12,37 +12,37 @@ export class FormstackOAuth2Api implements ICredentialType {
 	];
 	displayName = 'Formstack OAuth2 API';
 	documentationUrl = 'formstackTrigger';
-	properties = [
+	properties: INodeProperties[] = [
 		{
 			displayName: 'Authorization URL',
 			name: 'authUrl',
-			type: 'hidden' as NodePropertyTypes,
+			type: 'hidden',
 			default: 'https://www.formstack.com/api/v2/oauth2/authorize',
 			required: true,
 		},
 		{
 			displayName: 'Access Token URL',
 			name: 'accessTokenUrl',
-			type: 'hidden' as NodePropertyTypes,
+			type: 'hidden',
 			default: 'https://www.formstack.com/api/v2/oauth2/token',
 			required: true,
 		},
 		{
 			displayName: 'Scope',
 			name: 'scope',
-			type: 'hidden' as NodePropertyTypes,
+			type: 'hidden',
 			default: scopes.join(' '),
 		},
 		{
 			displayName: 'Auth URI Query Parameters',
 			name: 'authQueryParameters',
-			type: 'hidden' as NodePropertyTypes,
+			type: 'hidden',
 			default: '',
 		},
 		{
 			displayName: 'Authentication',
 			name: 'authentication',
-			type: 'hidden' as NodePropertyTypes,
+			type: 'hidden',
 			default: 'header',
 		},
 	];