Bump CI to php 8.1 (and tests root against php 8.2) (#1148)

Author: jderusse

.github/workflows/branch_alias.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Set up PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.0
+          php-version: 8.1
           coverage: none
 
       - name: Find branch alias

phpunit.xml.dist

@@ -14,6 +14,7 @@
   </coverage>
   <php>
     <ini name="error_reporting" value="-1"/>
+    <env name="SYMFONY_DEPRECATIONS_HELPER" value="max[self]=0&amp;verbose=0" />
   </php>
   <testsuites>
     <testsuite name="Test Suite">