Moved the parser as a dev dependency

Author: sdangol

packages/batch/package.json

@@ -73,18 +73,7 @@
     "nodejs"
   ],
   "devDependencies": {
-    "@aws-lambda-powertools/testing-utils": "file:../testing"
-  },
-  "peerDependencies": {
-    "@aws-lambda-powertools/parser": "2.25.2",
-    "@standard-schema/spec": "^1.0.0"
-  },
-  "peerDependenciesMeta": {
-    "@aws-lambda-powertools/parser": {
-      "optional": true
-    },
-    "@standard-schema/spec": {
-      "optional": true
-    }
+    "@aws-lambda-powertools/testing-utils": "file:../testing",
+    "@aws-lambda-powertools/parser": "2.25.2"
   }
 }