feat(api): revert dpr breaking change

Author: stainless-app[bot]

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 47
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/imagekit-inc%2Fimagekit-e5b5a158784fff63311ceef956e8d5ce9e87c6b557d23ab737270040eb39adcd.yml
-openapi_spec_hash: b0293985a8806f367319af573d1b418c
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/imagekit-inc%2Fimagekit-83a7f3659a437113f2a79e1e72794be19eff00ec232fd0206198c80364ccfebf.yml
+openapi_spec_hash: b327552548ab641eb4ea3b45e643dfce
 config_hash: 47cb702ee2cb52c58d803ae39ade9b44

src/resources/shared.ts

@@ -1454,7 +1454,7 @@ export interface Transformation {
    *   [Arithmetic expressions](https://imagekit.io/docs/arithmetic-expressions-in-transformations).
    * - See [DPR](https://imagekit.io/docs/image-resize-and-crop#dpr---dpr).
    */
-  dpr?: number | string;
+  dpr?: number;
 
   /**
    * Specifies the duration (in seconds) for trimming videos, e.g., `5` or `10.5`.