Merge branch '8.5' into 9.6

* 8.5:
  Test with PHP 8.6

Author: sebastianbergmann

.github/workflows/ci.yaml

@@ -173,6 +173,7 @@ jobs:
           - "8.3"
           - "8.4"
           - "8.5"
+          - "8.6"
 
     steps:
       - name: Configure git to avoid issues with line endings
@@ -248,6 +249,7 @@ jobs:
           - "8.3"
           - "8.4"
           - "8.5"
+          - "8.6"
 
     steps:
       - name: Configure git to avoid issues with line endings
@@ -441,6 +443,7 @@ jobs:
           - "8.3"
           - "8.4"
           - "8.5"
+          - "8.6"
 
         coverage:
           - pcov