fix: replace regex constraint with LIKE '%/%' for PG compat

- constraint CHECK (value_cidr LIKE '%/%') instead of regex
- regex broke on managed PG with standard_conforming_strings=off
- ALTER TABLE adds constraint on existing tables

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ipwhitelist",
-  "version": "0.5.35",
+  "version": "0.5.36",
   "description": "IP WhiteList microservice for cloud provider",
   "main": "server.js",
   "scripts": {