fix CI, bump deps versions

* refactor: enforce php74 and higher
* Update composer.json

Author: pizzaminded

composer.json

@@ -4,8 +4,10 @@
     "type": "library",
     "license": "MIT",
     "require": {
+        "php": ">= 7.4",
+        "guzzlehttp/guzzle": "> 7",
         "doctrine/annotations": "^1.11",
-        "aws/aws-sdk-php": "^3"
+        "aws/aws-sdk-php": "^3.173"
     },
     "require-dev": {
         "vimeo/psalm": "^4.3",