Update toolkit/stdlib requirement from ~1.0 to ~1.0 || ~2.0

Updates the requirements on [toolkit/stdlib](https://github.com/php-toolkit/stdlib) to permit the latest version.
- [Release notes](https://github.com/php-toolkit/stdlib/releases)
- [Commits](php-toolkit/stdlib@v1.0.0...v2.0.12)

---
updated-dependencies:
- dependency-name: toolkit/stdlib
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

composer.json

@@ -17,7 +17,7 @@
   "require": {
     "php": ">7.4.0",
     "ext-mbstring": "*",
-    "toolkit/stdlib":"~1.0"
+    "toolkit/stdlib":"~1.0 || ~2.0"
   },
   "autoload": {
     "psr-4": {