Fix dependency; Bump patch version

Author: Julien Heller

package.json

@@ -1,6 +1,6 @@
 {
   "name": "demux-postgres",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "Demux-js Action Handler implementation for Postgres databases",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -28,12 +28,12 @@
   },
   "dependencies": {
     "@types/express": "^4.16.1",
-    "demux": "4.0.1-ff84e5a.0",
+    "demux": "4.0.0",
     "massive": "5.7.2",
     "pg-promise": "8.5.3"
   },
   "peerDependencies": {
-    "demux": "4.0.1-ff84e5a.0"
+    "demux": "4.0.0"
   },
   "scripts": {
     "build": "tsc && cp -R src/cyanaudit dist",