Upgrade to phpunit 8

brianrlewis · brianrlewis · commit fdbf29200b22 · 2023-02-17T13:30:41.000-08:00
diff --git a/composer.json b/composer.json
@@ -26,7 +26,7 @@
     "simplito/elliptic-php": "^1.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^7.3"
+    "phpunit/phpunit": "^8.0"
   },
   "autoload": {
     "psr-4": {
