Update app icons (#743)

* Update podgrab icon

* Update Ombi icon

* Update phpldapadmin icon

charts/stable/ombi/Chart.yaml

@@ -7,7 +7,7 @@ dependencies:
 deprecated: false
 description: Want a Movie or TV Show on Plex or Emby? Use Ombi!
 home: https://github.com/truecharts/apps/tree/master/charts/stable/ombi
-icon: https://img3.androidappsapk.co/wiLDnuwrCWctiiW62ALcj4eIpNbzeRH_UNPo7eqlpYvGkCQYSTybaI4xVRLKGjnlamlV=s300
+icon: https://raw.githubusercontent.com/Ombi-app/Ombi/gh-pages/img/android-chrome-512x512.png
 keywords:
 - ombi
 - plex
@@ -27,4 +27,4 @@ name: ombi
 sources:
 - https://github.com/tidusjar/Ombi
 type: application
-version: 6.4.4
+version: 6.4.5