feat(database): add banking database and update mount path

adds a new database named banking to the PostgreSQL initialization script 
and modifies the mount path for PostgreSQL data to improve compatibility 
with volume management practices.

kind/postgres.yaml

@@ -19,6 +19,7 @@ data:
     psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
     	CREATE DATABASE schemas WITH OWNER postgres ENCODING utf8;
     	CREATE DATABASE accounting WITH OWNER postgres ENCODING utf8;
+    	CREATE DATABASE banking WITH OWNER postgres ENCODING utf8;
     	CREATE DATABASE authz WITH OWNER postgres ENCODING utf8;
     	CREATE DATABASE company WITH OWNER postgres ENCODING utf8;
     	CREATE DATABASE consumer WITH OWNER postgres ENCODING utf8;
@@ -78,7 +79,7 @@ spec:
           value: --locale-provider=icu --icu-locale=sv-SE
         volumeMounts:
         - name: data
-          mountPath: /var/lib/postgresql/data
+          mountPath: /var/lib/postgresql
         - mountPath: /docker-entrypoint-initdb.d/initdb.sh
           name: initdb
           subPath: initdb.sh