fix: port template string and updateStrategy indentation (#643)

helm/opengist/templates/secret.yaml

@@ -25,7 +25,7 @@
   {{- $user := default "" .Values.postgresql.global.postgresql.auth.username }}
   {{- $pass := default "" .Values.postgresql.global.postgresql.auth.password }}
   {{- $db := default "" .Values.postgresql.global.postgresql.auth.database }}
-  {{- $port := default 5432 .Values.postgresql.global.postgresql.service.ports.postgresql }}
+  {{- $port := int (default 5432 .Values.postgresql.global.postgresql.service.ports.postgresql) }}
   {{- if or (eq $user "") (eq $pass "") (eq $db "") }}
     {{- fail "postgresql.enabled=true requires username/password/database (postgresql.global.postgresql.auth.*) or set config.db-uri manually" }}
   {{- end }}