Temporarily disable 8.6

PHP 8.6 builds are broken, which is stopping me from landing other
fixes...

Author: shish

.github/workflows/continuous-integration.yml

@@ -105,7 +105,6 @@ jobs:
           - "8.3"
           - "8.4"
           - "8.5"
-          - "8.6"
     steps:
       - name: "Checkout"
         uses: "actions/checkout@v6"

composer.json

@@ -45,7 +45,6 @@
             "generated/json.php",
             "generated/ldap.php",
             "generated/libxml.php",
-            "generated/litespeed.php",
             "generated/lzf.php",
             "generated/mailparse.php",
             "generated/mbstring.php",