chore: Switch some zod imports to type only

Signed-off-by: Gabriel Dugny <gabriel.dugny@believe.com>

plugins/auth-node/report.api.md

@@ -16,8 +16,8 @@ import { Profile } from 'passport';
 import { Request as Request_2 } from 'express';
 import { Response as Response_2 } from 'express';
 import { Strategy } from 'passport';
-import { ZodSchema } from 'zod/v3';
-import { ZodTypeDef } from 'zod/v3';
+import type { ZodSchema } from 'zod/v3';
+import type { ZodTypeDef } from 'zod/v3';
 
 // @public (undocumented)
 export interface AuthOwnershipResolutionExtensionPoint {

plugins/auth-node/src/sign-in/createSignInResolverFactory.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import { ZodSchema, ZodTypeDef } from 'zod/v3';
+import type { ZodSchema, ZodTypeDef } from 'zod/v3';
 import { SignInResolver } from '../types';
 import zodToJsonSchema from 'zod-to-json-schema';
 import { JsonObject } from '@backstage/types';