Test on PHP 8.5

Author: horgh

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         arch: ["amd64", "arm64v8"]
-        php-version: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
+        php-version: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
         php-extension: ['bcmath', 'gmp']
         include:
           - arch: amd64