Issue #3482275: Support dompdf 3 and PHPWord 1.3.0

Closes #3482275

composer.json

@@ -5,8 +5,8 @@
   "homepage": "https://drupal.org/project/documentation_generator",
   "license": "GPL-2.0+",
   "require": {
-    "phpoffice/phpword": "^0.18.2",
-    "dompdf/dompdf": "^2.0.0"
+    "phpoffice/phpword": "^1.3.0",
+    "dompdf/dompdf": "^3.1.0"
   },
   "minimum-stability": "stable"
 }