ci: update the version packages

Author: github-actions[bot]

.changeset/pre.json

@@ -1,7 +1,7 @@
 # @openzeppelin/relayer-sdk
 
 
-## 1.4.0-rc.0 (2025-08-07)
+## 1.4.0 (2025-08-07)
 
 - fix: plugin method response types ([#158](https://github.com/OpenZeppelin/openzeppelin-relayer-sdk/pull/158))
 

.changeset/violet-coins-agree.md

@@ -1,6 +1,6 @@
 {
   "name": "@openzeppelin/relayer-sdk",
-  "version": "1.4.0-rc.0",
+  "version": "1.4.0",
   "description": "OpenZeppelin Relayer SDK",
   "license": "AGPL-3.0-or-later",
   "files": [