Fix CI

Author: spawnia

.github/workflows/validate.yml

@@ -25,7 +25,7 @@ jobs:
           - 8.2
           - 8.3
         laravel-version:
-          - 5.5.*
+          # Purposefully omitting 5.5.*, it cannot be installed due to a conflict with orchestra/testbench
           - 5.6.*
           - 5.7.*
           - 5.8.*
@@ -68,8 +68,6 @@ jobs:
             laravel-version: ^10
           - php-version: 7.4
             laravel-version: ^11
-          - php-version: 8.0
-            laravel-version: 5.5.*
           - php-version: 8.0
             laravel-version: 5.6.*
           - php-version: 8.0
@@ -84,8 +82,6 @@ jobs:
             laravel-version: ^10
           - php-version: 8.0
             laravel-version: ^11
-          - php-version: 8.1
-            laravel-version: 5.5.*
           - php-version: 8.1
             laravel-version: 5.6.*
           - php-version: 8.1
@@ -98,8 +94,6 @@ jobs:
             laravel-version: ^7
           - php-version: 8.1
             laravel-version: ^11
-          - php-version: 8.2
-            laravel-version: 5.5.*
           - php-version: 8.2
             laravel-version: 5.6.*
           - php-version: 8.2
@@ -110,8 +104,6 @@ jobs:
             laravel-version: ^6
           - php-version: 8.2
             laravel-version: ^7
-          - php-version: 8.3
-            laravel-version: 5.5.*
           - php-version: 8.3
             laravel-version: 5.6.*
           - php-version: 8.3