cygwin enable php 8.1

Author: jingjingxyk

.github/workflows/windows-cygwin.yml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         php-version:
           - "8.2.29"
-        #  - "8.1.33"
+          - "8.1.33"
           - "8.3.28"
           - "8.4.15"
         #  - "8.5.0"