fix(functions): add application/pdf response parsing to FunctionsClient (#1757)

Co-authored-by: Staud <staudtphil@aol.com>

Author: mandarini

packages/core/functions-js/src/FunctionsClient.ts

@@ -123,7 +123,10 @@ export class FunctionsClient {
       let data: any
       if (responseType === 'application/json') {
         data = await response.json()
-      } else if (responseType === 'application/octet-stream') {
+      } else if (
+        responseType === 'application/octet-stream' ||
+        responseType === 'application/pdf'
+      ) {
         data = await response.blob()
       } else if (responseType === 'text/event-stream') {
         data = response