[release-v0.15.x] Resolve STS not starting when fsGroup is not set (#1085)

* Resolve STS not starting when fsGroup is not set

* Actually place securitycontext on the correct location

---------

Co-authored-by: sventenraa <sven.ten.raa@alliander.com>

Author: tekton-robot

config/components/local-db/201-sql-deployment.yaml

@@ -38,6 +38,8 @@ spec:
       labels:
         app.kubernetes.io/name: tekton-results-postgres
     spec:
+      securityContext:
+        fsGroup: 1001
       containers:
       - name: postgres
         image: bitnami/postgresql@sha256:35c57c2abb3775004d4a247b1119b2e436b0ef620c9236c64aebce373b58ff9a # 13.12.0