chore(ci): remove php 8.6 job

it was already there because of the register_argc_argv issue which has already been fixed in codeception

Author: W0rma

.github/workflows/main.yml

@@ -5,15 +5,10 @@ on:
 jobs:
   tests:
     runs-on: ubuntu-latest
-    continue-on-error: ${{ matrix.experimental }}
 
     strategy:
       matrix:
         php: [8.2, 8.3, 8.4, 8.5]
-        experimental: [false]
-        include:
-          - php: 8.6
-            experimental: true
 
     steps:
     - name: Checkout code