updates

package.json

@@ -51,7 +51,7 @@
     "ember-cli-htmlbars": "^5.3.1",
     "ember-cli-typescript": "^4.0.0",
     "ember-decorators": "^6.1.1",
-    "ember-truth-helpers": "^2.1.0"
+    "ember-truth-helpers": "^3.0.0"
   },
   "devDependencies": {
     "@alexdiliberto/eslint-config": "^4.1.1",
@@ -62,12 +62,12 @@
     "@types/ember__test-helpers": "^1.7.2",
     "@types/qunit": "^2.9.0",
     "@types/rsvp": "^4.0.3",
-    "@typescript-eslint/eslint-plugin": "^4.0.0",
-    "@typescript-eslint/parser": "^3.9.0",
+    "@typescript-eslint/eslint-plugin": "^4.7.0",
+    "@typescript-eslint/parser": "^4.7.0",
     "broccoli-asset-rev": "^3.0.0",
     "broccoli-concat-analyser": "^5.0.0",
     "ember-cli": "~3.22.0",
-    "ember-cli-addon-docs": "^0.9.0",
+    "ember-cli-addon-docs": "~0.9.0",
     "ember-cli-addon-docs-yuidoc": "^1.0.0",
     "ember-cli-dependency-checker": "^3.2.0",
     "ember-cli-dependency-lint": "^2.0.0",

tests/dummy/config/dependency-lint.js

@@ -4,6 +4,7 @@
 module.exports = {
   allowedVersions: {
     // NOTE: Necessary until we can upgrade all dependencies in the tree relying on these packages
-    'ember-test-waiters': '*'
+    'ember-test-waiters': '*',
+    'ember-truth-helpers': '*'
   }
 };