Restore PHP 8.1 compatibility

Signed-off-by: Mart Somermaa <[email protected]>

Author: mrts

composer.json

@@ -10,7 +10,7 @@
         }
     ],
     "require-dev": {
-        "phpunit/phpunit": "^11.0.4"
+        "phpunit/phpunit": "^10.5"
     },
     "autoload": {
         "psr-4": {
@@ -32,9 +32,10 @@
         }
     ],
     "require": {
+        "php": ">=8.1",
         "phpseclib/phpseclib": "3.0.*",
         "guzzlehttp/psr7": "2.6.*",
-        "web-eid/ocsp-php": "1.1.1",
+        "web-eid/ocsp-php": "1.1.*",
         "psr/log": "^3.0"
     },
     "scripts": {