fix(helm): pg version check

Signed-off-by: rjshrjndrn <rjshrjndrn@gmail.com>

scripts/helmcharts/openreplay/templates/job.yaml

@@ -158,7 +158,7 @@ spec:
         args:
           - |
             set -x
-            pg_version=$(psql -c "SHOW server_version;" | grep -oP '\d\d+')
+            pg_version=$(psql -c "SHOW server_version;" | xargs | grep -oP '\d+(?=\.)')
             if [[ $pg_version -le 14 ]]; then
               echo "[error] postgresql version is $pg_version which is <= 15. Exiting."
               exit 101