Update dependencies and code style

composer.json

@@ -11,21 +11,22 @@
         "tls"
     ],
     "require": {
-        "php": ">=7",
+        "php": ">=7.2",
         "ext-openssl": "*",
-        "amphp/process": "^0.3.3",
-        "amphp/parallel": "^0.2.5",
-        "kelunik/acme": "^0.5",
+        "amphp/process": "^1.1",
+        "amphp/parallel": "^v1.4",
+        "kelunik/acme": "^1-dev",
         "kelunik/certificate": "^1",
-        "league/climate": "^3.2",
-        "rdlowrey/auryn": "^1.4.2",
-        "webmozart/assert": "^1.2",
-        "symfony/yaml": "^3.0",
-        "amphp/log": "^1.0"
+        "league/climate": "^3.4",
+        "rdlowrey/auryn": "^1.4.4",
+        "webmozart/assert": "^1.3",
+        "symfony/yaml": "^5.3.2",
+        "amphp/log": "^1.0",
+        "ext-posix": "*"
     },
     "require-dev": {
-        "phpunit/phpunit": "^6",
-        "friendsofphp/php-cs-fixer": "^2.9",
+        "phpunit/phpunit": "^8 || ^9",
+        "amphp/php-cs-fixer-config": "dev-master",
         "macfja/phar-builder": "^0.2.6"
     },
     "license": "MIT",
@@ -45,7 +46,7 @@
     },
     "config": {
         "platform": {
-            "php": "7.0.0"
+            "php": "7.2.5"
         }
     },
     "extra": {
@@ -53,7 +54,11 @@
             "compression": "GZip",
             "name": "acme-client.phar",
             "output-dir": "build",
-            "include": ["info", "src", "vendor/kelunik/acme/res"],
+            "include": [
+                "info",
+                "src",
+                "vendor/kelunik/acme/res"
+            ],
             "include-dev": false,
             "skip-shebang": false,
             "entry-point": "bin/acme",