feat: Use ping instead of bright data for ISP proxy

Author: stainless-app[bot]

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 65
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/kernel%2Fkernel-ecf484375ede1edd7754779ad8beeebd4ba9118152fe6cd65772dc7245a19dee.yml
-openapi_spec_hash: b1f3f05005f75cbf5b82299459e2aa9b
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/kernel%2Fkernel-e914e2d08b888c77051acb09176d5e88052f130e0d22e85d946a675d2c3d39ab.yml
+openapi_spec_hash: 611d0ed1b4519331470b5d14e5f6784a
 config_hash: 3ded7a0ed77b1bfd68eabc6763521fe8

src/resources/proxies.ts

@@ -88,19 +88,19 @@ export namespace ProxyCreateResponse {
    */
   export interface DatacenterProxyConfig {
     /**
-     * ISO 3166 country code.
+     * ISO 3166 country code. Defaults to US if not provided.
      */
-    country: string;
+    country?: string;
   }
 
   /**
    * Configuration for an ISP proxy.
    */
   export interface IspProxyConfig {
     /**
-     * ISO 3166 country code.
+     * ISO 3166 country code. Defaults to US if not provided.
      */
-    country: string;
+    country?: string;
   }
 
   /**
@@ -308,19 +308,19 @@ export namespace ProxyRetrieveResponse {
    */
   export interface DatacenterProxyConfig {
     /**
-     * ISO 3166 country code.
+     * ISO 3166 country code. Defaults to US if not provided.
      */
-    country: string;
+    country?: string;
   }
 
   /**
    * Configuration for an ISP proxy.
    */
   export interface IspProxyConfig {
     /**
-     * ISO 3166 country code.
+     * ISO 3166 country code. Defaults to US if not provided.
      */
-    country: string;
+    country?: string;
   }
 
   /**
@@ -531,19 +531,19 @@ export namespace ProxyListResponse {
      */
     export interface DatacenterProxyConfig {
       /**
-       * ISO 3166 country code.
+       * ISO 3166 country code. Defaults to US if not provided.
        */
-      country: string;
+      country?: string;
     }
 
     /**
      * Configuration for an ISP proxy.
      */
     export interface IspProxyConfig {
       /**
-       * ISO 3166 country code.
+       * ISO 3166 country code. Defaults to US if not provided.
        */
-      country: string;
+      country?: string;
     }
 
     /**
@@ -737,19 +737,19 @@ export namespace ProxyCreateParams {
    */
   export interface DatacenterProxyConfig {
     /**
-     * ISO 3166 country code.
+     * ISO 3166 country code. Defaults to US if not provided.
      */
-    country: string;
+    country?: string;
   }
 
   /**
    * Configuration for an ISP proxy.
    */
   export interface IspProxyConfig {
     /**
-     * ISO 3166 country code.
+     * ISO 3166 country code. Defaults to US if not provided.
      */
-    country: string;
+    country?: string;
   }
 
   /**