chore(apps): update icons (#3156)

* chore(apps): update icons

* bump everything

charts/stable/shlink/Chart.yaml

@@ -15,7 +15,7 @@ dependencies:
 deprecated: false
 description: A PHP-based self-hosted URL shortener that can be used to serve shortened URLs under your own custom domain.
 home: https://github.com/truecharts/apps/tree/master/charts/stable/shlink
-icon: https://truecharts.org/img/appicons/shlink.png
+icon: https://truecharts.org/img/chart-icons/shlink.png
 keywords:
 - url
 - shortener
@@ -28,7 +28,7 @@ name: shlink
 sources:
 - https://github.com/shlinkio/shlink
 type: application
-version: 4.0.14
+version: 4.0.15
 annotations:
   truecharts.org/catagories: |
     - utilities