Release 7 new icons and 2 updated icons (v15.4.0)

API deprecation

The simple-icons/icons entry has been deprecated. You will get a deprecation warning while using the simple-icons/icons entry. Please use the main entry instead. (#13520 #13530) (@mondeja)

-import * as icons from "simple-icons/icons";
+import * as icons from "simple-icons";

7 new icons

• Braintrust (#13504) (@dkmiller)
• Dolphin (#11813) (@DerBraky)
• Ente (#11633) (@CodeShakingSheep)
• GPLv3 (#13473) (@prem-k-r)
• Luau (#13523) (@prem-k-r)
• Vikunja (#13133) (@CodeShakingSheep)
• Yaak (#13136) (@CodeShakingSheep)

2 updated icons

• Flask (#13524) (@esadek)
• Polars (#13526) (@esadek)