Revert "CI.yaml: Test on PHP 8.2"

This reverts commit 0a1e2bf.

Author: reedy

.github/workflows/CI.yaml

@@ -24,8 +24,6 @@ jobs:
  php: "8.0"
  - os: ubuntu-20.04
  php: "8.1"
- - os: ubuntu-20.04
- php: "8.2"
 
  name: Test PHP ${{ matrix.php }}
  runs-on: ${{ matrix.os }}