ci: fix backwards compatibility check

Author: ALameLlama

.github/workflows/backwards-compatibility.yml

@@ -15,7 +15,7 @@ jobs:
             -   name: Install PHP
                 uses: shivammathur/setup-php@v2
                 with:
-                    php-version: '8.2'
+                    php-version: '8.5'
 
             -   name: Install roave/backward-compatibility-check
                 run: composer require --dev roave/backward-compatibility-check

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                php-versions: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
+                php-versions: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.5']
 
         steps:
             - uses: actions/checkout@v6