Add Burkert as the bronze sponsor (#13731)

* add Burkert as the bronze sponsor

* use jpg

README.md

@@ -57,6 +57,7 @@ If you find OpenAPI Generator useful for work, please consider asking your compa
 [<img src="https://openapi-generator.tech/img/companies/onesignal.png" width="128" height="128">](https://www.onesignal.com/?utm_source=openapi_generator&utm_medium=github_webpage&utm_campaign=sponsor)
 [<img src="https://openapi-generator.tech/img/companies/virtualansoftware.png" width="128" height="128">](https://www.virtualansoftware.com/?utm_source=openapi_generator&utm_medium=github_webpage&utm_campaign=sponsor)
 [<img src="https://openapi-generator.tech/img/companies/mergedev.jpeg" width="128" height="128">](https://www.merge.dev/?utm_source=openapi_generator&utm_medium=github_webpage&utm_campaign=sponsor)
+[<img src="https://openapi-generator.tech/img/companies/burkert.jpg" width="128" height="128">](https://www.burkert.com/?utm_source=openapi_generator&utm_medium=github_webpage&utm_campaign=sponsor)
 
 #### Thank you GoDaddy for sponsoring the domain names, Linode for sponsoring the VPS and Checkly for sponsoring the API monitoring
 

website/src/dynamic/sponsors.yml

@@ -53,3 +53,8 @@
   image: "img/companies/mergedev.jpeg"
   infoLink: "https://www.merge.dev/?utm_source=openapi_generator&utm_medium=official_website&utm_campaign=sponsor"
   bronze: true
+-
+  caption: "Bürkert"
+  image: "img/companies/burkert.jpg"
+  infoLink: "https://www.burkert.com/?utm_source=openapi_generator&utm_medium=official_website&utm_campaign=sponsor"
+  bronze: true