Allow @ember/test-helpers v5.x and update ember-cli to 6.1

.github/workflows/ci.yml

@@ -19,10 +19,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-
-      - uses: pnpm/action-setup@v3
-        with:
-          version: 8
+      - uses: pnpm/action-setup@v4
 
       - uses: actions/setup-node@v4
         with:
@@ -44,10 +41,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-
-      - uses: pnpm/action-setup@v3
-        with:
-          version: 8
+      - uses: pnpm/action-setup@v4
 
       - name: Install Node
         uses: actions/setup-node@v4
@@ -71,10 +65,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-
-      - uses: pnpm/action-setup@v3
-        with:
-          version: 8
+      - uses: pnpm/action-setup@v4
 
       - uses: actions/setup-node@v4
         with:
@@ -115,10 +106,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-
-      - uses: pnpm/action-setup@v3
-        with:
-          version: 8
+      - uses: pnpm/action-setup@v4
 
       - name: Install Node
         uses: actions/setup-node@v4

.github/workflows/docs.yml

@@ -19,10 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-
-      - uses: pnpm/action-setup@v3
-        with:
-          version: 8
+      - uses: pnpm/action-setup@v4
 
       - uses: actions/setup-node@v4
         with:
@@ -45,10 +42,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-
-      - uses: pnpm/action-setup@v3
-        with:
-          version: 8
+      - uses: pnpm/action-setup@v4
 
       - name: Install Node
         uses: actions/setup-node@v4
@@ -73,10 +67,7 @@ jobs:
     if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/master'))
     steps:
       - uses: actions/checkout@v4
-
-      - uses: pnpm/action-setup@v3
-        with:
-          version: 8
+      - uses: pnpm/action-setup@v4
 
       - name: Install Node
         uses: actions/setup-node@v4

.github/workflows/push-dist.yml

@@ -19,9 +19,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: pnpm/action-setup@v3
-        with:
-          version: 8
+      - uses: pnpm/action-setup@v4
+
       - uses: actions/setup-node@v4
         with:
           node-version: 18

config/ember-cli-update.json

@@ -4,7 +4,7 @@
   "packages": [
     {
       "name": "@embroider/addon-blueprint",
-      "version": "2.18.0",
+      "version": "4.0.0",
       "blueprints": [
         {
           "name": "@embroider/addon-blueprint",

docs/.prettierrc.js

@@ -1,12 +1,20 @@
 'use strict';
 
 module.exports = {
+  plugins: ['prettier-plugin-ember-template-tag'],
   overrides: [
     {
-      files: '*.{js,ts}',
+      files: '*.{js,gjs,ts,gts,mjs,mts,cjs,cts}',
       options: {
         singleQuote: true,
       },
     },
+    {
+      files: '*.{gjs,gts}',
+      options: {
+        singleQuote: true,
+        templateSingleQuote: false,
+      },
+    },
   ],
 };

docs/app/app.ts

@@ -2,7 +2,6 @@ import Application from '@ember/application';
 import Resolver from 'ember-resolver';
 import loadInitializers from 'ember-load-initializers';
 import config from 'docs/config/environment';
-// @ts-expect-error no types shipped from prismjs
 import Prism from 'prismjs';
 import 'prismjs/plugins/normalize-whitespace/prism-normalize-whitespace';
 import 'prismjs/components/prism-css';

docs/app/components/code-inline.ts

@@ -3,9 +3,7 @@ import { modifier } from 'ember-modifier';
 import { htmlSafe, type SafeString } from '@ember/template';
 import { tracked } from '@glimmer/tracking';
 import { assert } from '@ember/debug';
-
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-declare const Prism: any;
+import Prism from 'prismjs';
 
 interface CodeInlineSignature {
   Element: HTMLElement;
@@ -25,8 +23,8 @@ export default class CodeInline extends Component<CodeInlineSignature> {
       "ember-prism's <CodeBlock/> and <CodeInline/> components require a `code` parameter to be passed in.",
       code !== undefined,
     );
-    if (Prism?.plugins?.NormalizeWhitespace) {
-      return Prism.plugins.NormalizeWhitespace.normalize(code);
+    if (Prism?.plugins['NormalizeWhitespace']) {
+      return Prism.plugins['NormalizeWhitespace'].normalize(code) as string;
     }
 
     return code;

docs/config/ember-cli-update.json

@@ -3,7 +3,7 @@
   "packages": [
     {
       "name": "ember-cli",
-      "version": "5.12.0",
+      "version": "6.1.0",
       "blueprints": [
         {
           "name": "app",