Drop support for PHP 7.4 and 8.0, introduce support for PHP 8.4, fix semconv deprecations (#315)

* Fixed a bit of warnings and deprecations
* Dropped support for PHP 7.4 and 8.0. Introduced support for PHP 8.4
* Set revision psalm to 6.4.0, more suppressions
* Curl instrumentation fix
* updated packages generating deprecated warnings

Author: intuibase

composer.json

@@ -9,7 +9,7 @@
   "minimum-stability": "dev",
   "prefer-stable": true,
   "require": {
-    "php": "^7.0|^8.0",
+    "php": "^8.1",
     "open-telemetry/context": "^1.0"
   },
   "autoload": {
@@ -22,10 +22,10 @@
     "phan/phan": "^5.0",
     "phpstan/phpstan": "^1.1",
     "phpstan/phpstan-phpunit": "^1.0",
-    "psalm/plugin-phpunit": "^0.18.4",
+    "psalm/plugin-phpunit": "^0.19.2",
     "open-telemetry/sdk": "^1.0",
     "phpunit/phpunit": "^9.5",
-    "vimeo/psalm": "^5.0",
+    "vimeo/psalm": "6.4.0",
     "symfony/http-client": "^5.4|^6.0",
     "guzzlehttp/promises": "^2",
     "php-http/message-factory": "^1.0",