up: add require dev deps for tests

inhere · inhere · commit 558c1bb05af5 · 2021-11-30T19:07:26.000+08:00
diff --git a/composer.json b/composer.json
@@ -23,6 +23,9 @@
     "php": ">=8.0",
     "ext-mbstring": "*"
   },
+  "require-dev": {
+    "psr/container": "^2.0"
+  },
   "autoload": {
     "psr-4": {
       "Toolkit\\Stdlib\\": "src/"
