Use ember-data@5.3 in v5.4 scenario

Author: SergeAstapov

packages/ember-cli-mirage/package.json

@@ -25,16 +25,16 @@
   },
   "scripts": {
     "build": "ember build --environment=production",
-    "lint": "concurrently \"npm:lint:*(!fix)\" --names \"lint:\"",
+    "lint": "concurrently \"pnpm:lint:*(!fix)\" --names \"lint:\"",
     "lint:css": "stylelint \"**/*.css\"",
-    "lint:css:fix": "concurrently \"npm:lint:css -- --fix\"",
-    "lint:fix": "concurrently \"npm:lint:*:fix\" --names \"fix:\"",
+    "lint:css:fix": "concurrently \"pnpm:lint:css -- --fix\"",
+    "lint:fix": "concurrently \"pnpm:lint:*:fix\" --names \"fix:\"",
     "lint:hbs": "ember-template-lint .",
     "lint:hbs:fix": "ember-template-lint . --fix",
     "lint:js": "eslint . --cache",
     "lint:js:fix": "eslint . --fix",
     "start": "ember serve",
-    "test": "concurrently \"npm:lint\" \"npm:test:*\" --names \"lint,test:\"",
+    "test": "concurrently \"pnpm:lint\" \"pnpm:test:*\" --names \"lint,test:\"",
     "test:ember": "ember test",
     "test:ember-compatibility": "ember try:each",
     "test:types": "tsc --project types-tests"

packages/ember-cli-mirage/tests/dummy/config/ember-try.js

@@ -51,7 +51,7 @@ module.exports = async function () {
         name: 'ember-lts-5.4',
         npm: {
           devDependencies: {
-            'ember-data': '~5.4.0',
+            'ember-data': '~5.3.0',
             'ember-source': '~5.4.0',
           },
         },