feat: remove outdate php versions

Author: tanhongit

.github/workflows/phpstan.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        php: [ '8.1', '8.2', '8.3' ]
+        php: [ '8.2', '8.3' ]
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/setup_test.yml

@@ -9,18 +9,13 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        php: [ '8.1', '8.2', '8.3' ]
-        laravel: [ 11.*, 10.*, 9.* ]
+        php: [ '8.2', '8.3' ]
+        laravel: [ 11.*, 10.* ]
         include:
           - laravel: 11.*
             testbench: 9.*
           - laravel: 10.*
             testbench: 8.*
-          - laravel: 9.*
-            testbench: 8.*
-        exclude:
-          - laravel: 11.*
-            php: 8.1
     steps:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2