Updated composer files to support php:^8.0

- updated composer dependencies
- fixed build yaml file

Author: drpayyne

.github/workflows/php.yml

@@ -9,13 +9,13 @@ on:
 jobs:
   build:
 
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
 
     steps:
     - uses: actions/checkout@v2
 
     - name: Update PHP
-      run: sudo update-alternatives --set php /usr/bin/php7.2
+      run: sudo update-alternatives --set php /usr/bin/php7.3
 
     - name: Validate composer
       run: composer validate

composer.json

@@ -8,18 +8,18 @@
     ],
     "bin": ["bin/svc"],
     "require": {
-        "php": "~7.2.29||~7.3.0||~7.4.0",
+        "php": "^7.3||^8.0",
         "ext-json": "*",
-        "phpstan/phpdoc-parser": "^0.3.5",
+        "laminas/laminas-stdlib": "^3.3",
+        "nikic/php-parser": "^4.10",
+        "phpstan/phpdoc-parser": "^0.5",
+        "sabre/xml": "^2.1",
         "symfony/console": "~4.1.0||~4.4.0",
         "tomzx/php-semver-checker": "^0.14.0",
-        "wikimedia/less.php": "~1.8.0",
-        "zendframework/zend-stdlib": "^3.2.1",
-        "nikic/php-parser": "~4.4.0||~4.5.0||~4.6.0",
-        "sabre/xml": "^2.1"
+        "wikimedia/less.php": "~1.8.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^6.5.0",
+        "phpunit/phpunit": "^9.5",
         "ext-dom": "*",
         "squizlabs/php_codesniffer": "^3.5"
     },
@@ -28,5 +28,8 @@
             "Magento\\SemanticVersionChecker\\": "src/",
             "Magento\\SemanticVersionChecker\\Test\\": "tests/"
         }
+    },
+    "config": {
+        "sort-packages": true
     }
 }