fix: Fix small problem with TypeScript 5.0

Author: gergan

package-lock.json

@@ -1,6 +1,6 @@
 {
     "name": "@essquare/typescript-openapi-codegen",
-    "version": "0.3.1",
+    "version": "0.3.2",
     "description": "Library that generates Typescript clients based on the OpenAPI specification.",
     "author": "Ferdi Koomen",
     "homepage": "https://github.com/essquare/typescript-openapi-codegen",

package.json

@@ -21,7 +21,7 @@ const sendRequest = async <T>(
     const transformers: AxiosResponseTransformer[] = [];
 
     transformers.push(function binaryData(data, headers) {
-        const contentType = (headers.getContentType() as string) || '';
+        const contentType = headers.getContentType()?.toString() || '';
         const hasJSONContentType = contentType.indexOf('application/json') > -1;
         const hasTextContentType = contentType.indexOf('text/plain') > -1;
         if (!hasJSONContentType && !hasTextContentType) {