Update squizlabs/php_codesniffer and use PSR-12

Author: MichelHartmann

README.md

@@ -2,13 +2,13 @@
 
 
 This repository contains the ruleset for the PHP code we develop at [FLYERALARM](https://flyeralarm.com). 
-It mostly consists of PSR-2 with some custom additions. The rules are enforced with the help of squizlabs/PHP_CodeSniffer
+It mostly consists of PSR-12 with some custom additions. The rules are enforced with the help of squizlabs/PHP_CodeSniffer
 
 The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”,
 “SHOULD NOT”, “RECOMMENDED”, “MAY”, and “OPTIONAL” in this document are to be
 interpreted as described in [RFC 2119](http://www.ietf.org/rfc/rfc2119.txt).
 
-## Custom Rules in addition to PSR-2
+## Custom Rules in addition to PSR-12
 
 * Variable names MUST be in lowerCamelCase
 * Yoda conditions MUST NOT be used

composer.json

@@ -15,7 +15,7 @@
     ],
     "minimum-stability": "stable",
     "require": {
-        "squizlabs/php_codesniffer": "^3.0"
+        "squizlabs/php_codesniffer": "^3.5"
     },
     "bin": [
         "bin/php-code-validator"

composer.lock

@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <ruleset name="FLYERALARM Coding Guidelines">
     <description>A custom coding standard for FLYERALARM</description>
-    <rule ref="PSR2"/>
+    <rule ref="PSR12"/>
     <rule ref="Generic.Formatting.SpaceAfterCast"/>
     <rule ref="Generic.Arrays.DisallowLongArraySyntax.Found"/>
     <rule ref="Generic.PHP.DisallowShortOpenTag"/>