Allow less requirements to avoid supporting deprecated versions

Author: Prometee

Diff for: .github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
             fail-fast: false
             matrix:
                 php: [7.2, 7.3, 7.4, 8.0]
-                symfony: [^3.4, ^4.4, ^5.4, ^6.0]
+                symfony: [^5.4, ^6.0]
 
                 exclude:
                     -

Diff for: composer.json

@@ -18,16 +18,15 @@
     "homepage": "https://github.com/ekyna/PayumMonetico",
     "license": "MIT",
     "require": {
-        "php": "^7.2|^8.0",
         "ext-json": "*",
         "payum/core": "^1.5",
-        "psr/log": "^1.0|^2.0|^3.0",
-        "symfony/options-resolver": "^3.4|^4.4|^5.4|^6.0",
+        "psr/log": "^1.0|^3.0",
+        "symfony/options-resolver": "^5.4|^6.0",
         "sokil/php-isocodes": "^2.0|^3.0"
     },
     "require-dev": {
-        "php-http/guzzle6-adapter": "^1.1|^2.0",
-        "phpunit/phpunit": "^7.0|^8.0|^9.0"
+        "php-http/guzzle7-adapter": "^1.0",
+        "phpunit/phpunit": "^8.0|^9.0"
     },
     "autoload": {
         "psr-4": {