Test with PHP 8.5 and PHP 8.6

Author: sebastianbergmann

.github/workflows/ci.yml

@@ -77,6 +77,8 @@ jobs:
           - "8.2"
           - "8.3"
           - "8.4"
+          - "8.5"
+          - "8.6"
 
         coverage-driver:
           - "pcov"
@@ -99,6 +101,12 @@ jobs:
           - php-version: "8.4"
             coverage-driver: "xdebug"
 
+          - php-version: "8.5"
+            coverage-driver: "xdebug"
+
+          - php-version: "8.6"
+            coverage-driver: "xdebug"
+
     steps:
       - name: Configure Git to avoid issues with line endings
         if: matrix.os == 'windows-latest'