update jetbrains logo handle dark mode

Author: chriskapp

README.md

@@ -262,4 +262,10 @@ We’re grateful to our partners who support the Fusio project and share our vis
 
 If your company is interested in becoming a partner and being listed here, consider [becoming a sponsor](https://github.com/sponsors/chriskapp).
 
-[![JetBrains logo.](https://resources.jetbrains.com/storage/products/company/brand/logos/jetbrains.svg)](https://jb.gg/OpenSource)
+<a href="https://jb.gg/OpenSource">
+ <picture>
+   <source media="(prefers-color-scheme: dark)" srcset="https://www.jetbrains.com/company/brand/img/logo_jb_dos_3.svg">
+   <source media="(prefers-color-scheme: light)" srcset="https://resources.jetbrains.com/storage/products/company/brand/logos/jetbrains.svg">
+   <img alt="JetBrains logo." src="https://resources.jetbrains.com/storage/products/company/brand/logos/jetbrains.svg">
+ </picture>
+</a>