rollback php/setup-php-sdk from 0.9 to 0.8

Author: deminy

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
         uses: actions/checkout@v4
       - name: Setup PHP
         id: setup-php
-        uses: php/setup-php-sdk@v0.9
+        uses: php/setup-php-sdk@v0.8
         with:
           version: ${{matrix.version}}
           arch: ${{matrix.arch}}