chore(apps): update icons ref (#2851)

* chore(apps): update icons ref

* also fix promtail icon

charts/dependency/memcached/Chart.yaml

@@ -7,7 +7,7 @@ dependencies:
 deprecated: false
 description: Memcached is a memory-backed database caching solution
 home: https://github.com/truecharts/apps/tree/master/charts/dependency/memcached
-icon: https://bitnami.com/assets/stacks/memcached/img/memcached-stack-220x234.png
+icon: https://truecharts.org/_static/img/appicons/memcached.png
 keywords:
 - memcached
 - database

charts/dependency/postgresql/Chart.yaml

@@ -7,7 +7,7 @@ dependencies:
 deprecated: false
 description: PostgresSQL
 home: https://github.com/truecharts/apps/tree/master/charts/dependency/postgresql
-icon: https://d1q6f0aelx0por.cloudfront.net/product-logos/library-postgres-logo.png
+icon: https://truecharts.org/_static/img/appicons/postgresql
 keywords:
 - postgres
 - postgressql

charts/dependency/promtail/Chart.yaml

@@ -6,7 +6,7 @@ dependencies:
   version: 10.0.8
 deprecated: false
 description: Promtail is an agent which ships the contents of local logs to a Loki instance
-icon: https://raw.githubusercontent.com/grafana/loki/master/docs/sources/logo.png
+icon: https://truecharts.org/_static/img/appicons/promtail
 home: https://github.com/truecharts/apps/tree/master/charts/dependency/promtail
 keywords:
 - metrics

charts/dependency/redis/Chart.yaml

@@ -7,7 +7,7 @@ dependencies:
 deprecated: false
 description: Open source, advanced key-value store.
 home: https://github.com/truecharts/apps/tree/master/charts/dependency/redis
-icon: https://bitnami.com/assets/stacks/redis/img/redis-stack-220x234.png
+icon: https://truecharts.org/_static/img/appicons/redis
 keywords:
   - redis
   - keyvalue

charts/stable/spotweb/Chart.yaml

@@ -6,7 +6,7 @@ name: spotweb
 description: Spotweb is a decentralized usenet community based on the Spotnet protocol.
 type: application
 home: https://github.com/truecharts/apps/tree/master/charts/stable/spotweb
-icon: https://raw.githubusercontent.com/spotweb/spotweb/9af0ade0f618675206dcf1f744dbb3c1eae70e5a/images/spotnet.gif
+icon: https://truecharts.org/_static/img/appicons/spotnet
 keywords:
 - usenet
 - spotweb