Removes php8.1 target from ci, as it's not supported according to composer.json

Author: justin

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['8.1', '8.2', '8.3']
+        php-version: ['8.2', '8.3']
 
     steps:
     - uses: actions/checkout@v4
@@ -54,7 +54,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['8.1', '8.2', '8.3']
+        php-version: ['8.2', '8.3']
 
     steps:
       - uses: actions/checkout@v4