GA: Remove PHP 8.1 from the matrix (for now)

.github/workflows/tests.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: ["7.3", "7.4", "8.0", "8.1"]
+        php: ["7.3", "7.4", "8.0"]
 
     name: PHP ${{ matrix.php }}/Linux
 
@@ -36,7 +36,7 @@ jobs:
             cp composer.json-dist composer.json
             composer require "kolab/net_ldap3:~1.1.1" --no-update
 
-      - name: Fix PHPUnit for PHP8.1
+      - name: Fix PHPUnit for PHP 8.1
         run: composer config platform.php 8.0
         if: matrix.php >= 8.1