Update package version to 1.2.6

package.json

 {
   "name": "service-email",
-  "version": "1.2.5",
+  "version": "1.2.6",
   "description": "description",
   "author": "",
   "license": "MIT",
@@ -71,4 +71,4 @@
     "coverageDirectory": "../coverage",
     "testEnvironment": "node"
   }
-}
+}
\ No newline at end of file