Bump version from 1.9.3 to 1.9.4

Author: khlr

manifest.json

@@ -3,7 +3,7 @@
   "description": "A debugger for viewing SAML messages",
   "author": "Olav Morken, Jaime Perez, Thijs Kinkhorst, Jan Köhler, Tim van Dijen",
   "manifest_version": 3,
-  "version": "1.9.3",
+  "version": "1.9.4",
   "homepage_url": "https://github.com/SimpleSAMLphp/SAML-tracer",
   "icons": {
     "16": "src/resources/images/icon16.png",