Upgrade to ember-source/cli 5.8, ember-data 4.12,

.github/workflows/ci.yml

@@ -20,8 +20,6 @@ jobs:
       - name: Check out a copy of the repo
         uses: actions/checkout@v2
 
-      - uses: mansona/npm-lockfile-version@v1
-
       - name: Use Node.js ${{ env.NODE_VERSION }}
         uses: actions/setup-node@v2
         with:

.npmrc

@@ -0,0 +1 @@
+ignore-scripts=false

config/fastboot.js

@@ -0,0 +1,27 @@
+/* eslint-disable no-undef */
+// NOTE: node/recommended doesn't know about these globals.
+//       switch to eslint-plugin-n to resolve.
+module.exports = function () {
+  return {
+    buildSandboxGlobals(defaultGlobals) {
+      return Object.assign({}, defaultGlobals, {
+        fetch,
+        AbortController,
+        crypto: require('node:crypto'),
+        ReadableStream:
+          typeof ReadableStream !== 'undefined'
+            ? ReadableStream
+            : require('node:stream/web').ReadableStream,
+        WritableStream:
+          typeof WritableStream !== 'undefined'
+            ? WritableStream
+            : require('node:stream/web').WritableStream,
+        TransformStream:
+          typeof TransformStream !== 'undefined'
+            ? TransformStream
+            : require('node:stream/web').TransformStream,
+        Headers: typeof Headers !== 'undefined' ? Headers : undefined,
+      });
+    },
+  };
+};