[2.x] Drop Laravel 8.x support (and PHP < 8) (#1082)

* drop Laravel 8.x support (and PHP < 8)

* add composer conflict

* match current framework PHP version

Author: timacdonald

Diff for: .github/workflows/tests.yml

@@ -13,13 +13,8 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [7.3, 7.4, '8.0', 8.1]
-        laravel: [8, 9]
-        exclude:
-          - php: 7.3
-            laravel: 9
-          - php: 7.4
-            laravel: 9
+        php: ['8.0', 8.1]
+        laravel: [9]
 
     name: PHP ${{ matrix.php }} - Laravel ${{ matrix.laravel }}
 

Diff for: composer.json

@@ -14,9 +14,9 @@
         }
     ],
     "require": {
-        "php": "^7.3|^8.0",
+        "php": "^8.0.2",
         "ext-json": "*",
-        "illuminate/support": "^8.37|^9.0",
+        "illuminate/support": "^9.0",
         "jenssegers/agent": "^2.6",
         "laravel/fortify": "^1.12"
     },
@@ -27,6 +27,9 @@
         "orchestra/testbench": "^6.0|^7.0",
         "phpunit/phpunit": "^9.3"
     },
+    "conflict": {
+        "laravel/framework": "<9.19.0"
+    },
     "autoload": {
         "psr-4": {
             "Laravel\\Jetstream\\": "src/"