docs: set minimum PHP 8.2

Author: ddevsr

README.md

@@ -87,7 +87,7 @@ Made with [contrib.rocks](https://contrib.rocks).
 
 ## Server Requirements
 
-PHP version 8.1 or higher is required, with the following extensions installed:
+PHP version 8.2 or higher is required, with the following extensions installed:
 
 - [intl](http://php.net/manual/en/intl.requirements.php)
 - [mbstring](http://php.net/manual/en/mbstring.installation.php)

admin/framework/README.md

@@ -42,7 +42,7 @@ Please read the [*Contributing to CodeIgniter*](https://github.com/codeigniter4/
 
 ## Server Requirements
 
-PHP version 8.1 or higher is required, with the following extensions installed:
+PHP version 8.2 or higher is required, with the following extensions installed:
 
 - [intl](http://php.net/manual/en/intl.requirements.php)
 - [mbstring](http://php.net/manual/en/mbstring.installation.php)

admin/starter/README.md

@@ -50,7 +50,7 @@ Problems with it can be raised on our forum, or as issues in the main repository
 
 ## Server Requirements
 
-PHP version 8.1 or higher is required, with the following extensions installed:
+PHP version 8.2 or higher is required, with the following extensions installed:
 
 - [intl](http://php.net/manual/en/intl.requirements.php)
 - [mbstring](http://php.net/manual/en/mbstring.installation.php)

contributing/pull_request.md

@@ -158,7 +158,7 @@ See [Contribution CSS](./css.md).
 
 ### Compatibility
 
-CodeIgniter4 requires [PHP 8.1](https://php.net/releases/8_1_0.php).
+CodeIgniter4 requires [PHP 8.2](https://php.net/releases/8_2_0.php).
 
 ### Backwards Compatibility