(feat) Standardise and Harden default app securitycontext (#1028)

* Apply security hardened defaults to values.yaml for all apps

* Add default common securityContext to all apps

* Adjust securityContext defaults in questions.yaml, according to values.yaml

* Add default common podSecurityContext to all apps

* Clean whitespace

* Clean more whitespace

* Adjust podSecurityContext defaults in questions.yaml, according to values.yaml

* fix pgadmin

Co-authored-by: Stavros kois <s.kois@outlook.com>

charts/stable/booksonic-air/Chart.yaml

@@ -1,9 +1,9 @@
 apiVersion: v2
-appVersion: "2009.1.0"
+appVersion: 2009.1.0
 dependencies:
 - name: common
   repository: https://truecharts.org
-  version: 7.0.14
+  version: 8.0.7
 description: Booksonic is a platform for accessing the audibooks you own wherever
   you are
 home: https://github.com/truechartsapps/tree/master/charts/incubator/booksonic-air
@@ -20,4 +20,4 @@ name: booksonic-air
 sources:
 - https://github.com/popeen/Booksonic-Air
 - https://hub.docker.com/r/linuxserver/booksonic-air
-version: 2.0.3
+version: 3.0.0