Maintain backward compatibility with File Hash v. 1.x

Use valid license string per composer validate.

composer.json

@@ -19,7 +19,7 @@
     "islandora/jsonld": "^2",
     "stomp-php/stomp-php": "4.*",
     "drupal/jwt": "^1.0.0-beta5",
-    "drupal/filehash": "^2",
+    "drupal/filehash": "^1.1 || ^2",
     "drupal/prepopulate" : "^2.2",
     "drupal/eva" : "^2.0",
     "drupal/features" : "^3.7",
@@ -39,7 +39,7 @@
   "suggest": {
     "drupal/transliterate_filenames": "Sanitizes filenames when they are uploaded so they don't break your repository." 
   },
-  "license": "GPL-2.0+",
+  "license": "GPL-2.0-or-later",
   "authors": [
     {
       "name": "Islandora Foundation",