Make sure to build the phar only on php >= 8.2

Since Box version 4.6.* requires min php 8.2 this had to be changed.
Since the Cap'n still has a min version of 8.0 the composer file has
to 'fake' the php version.

.github/workflows/integration.yml

@@ -10,11 +10,11 @@ jobs:
     strategy:
       matrix:
         php: ['8.0', '8.1', '8.2']
-        buildphar: [true]
+        buildphar: [false, false, true]
         experimental: [false]
         include:
           - php: 8.3
-            buildphar: false
+            buildphar: true
             experimental: false
     env:
       PHAR: build/phar/captainhook.phar

.github/workflows/release.yml

@@ -32,7 +32,7 @@ jobs:
         with:
           coverage: none
           extensions: mbstring
-          php-version: 8.0
+          php-version: 8.2
 
       - name: Install dependencies
         run: composer install --prefer-dist --no-dev --no-interaction --no-progress

composer.phar.json

@@ -63,7 +63,8 @@
     "sebastianfeldmann/captainhook": "*"
   },
   "config": {
-    "sort-packages": true
+    "sort-packages": true,
+    "platform": {"php": "8.0.0"}
   },
   "scripts": {
     "post-install-cmd": "tools/phive install --force-accept-unsigned",