Use PHP 8.3

Author: jrfnl

.github/workflows/test.yml

@@ -85,8 +85,8 @@ jobs:
 
       # This is a temporary solution.
       # Once ubuntu-latest includes the latest libxml2 version, this step can be removed.
-      - name: Install latest libxml2 on PHP 8.4 (linux only)
-        if: ${{ matrix.os == 'ubuntu-latest' && matrix.php == '8.4' }}
+      - name: Install latest libxml2 on PHP 8.3 (linux only)
+        if: ${{ matrix.os == 'ubuntu-latest' && matrix.php == '8.3' }}
         run: |
           sudo apt-get update
           sudo apt-get install -y wget build-essential