Merge pull request #67 from Johannestegner/feature/php-84-composer2

PHP 8.4 and composer v2.

Author: Johannestegner

.github/workflows/php.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-version: ['8.1', '8.2', '8.3']
+        php-version: ['8.1', '8.2', '8.3', '8.4']
         test-command: ['test']
 
     name: Test PHP ${{ matrix.php-version }}
@@ -23,7 +23,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php-version }}
-          tools: composer:v1
+          tools: composer:v2
       - name: Validate composer.json and composer.lock
         run: |
           composer --version

composer.json

@@ -35,7 +35,7 @@
   },
   "require": {
     "php": ">=8.1",
-    "psr/clock": "1.0.0"
+    "psr/clock": "^1.0.0"
   },
   "require-dev": {
     "ext-json": "*",