Composer: raise the minimum supported versions of all CS dependencies

... to benefit from new functionality and to ensure all minimum versions are versions compatible with PHPCS 4.0 (in so far as currently available - VariableAnalysis, WordPressCS and PHPCompatibility are not yet compatible with PHPCS 4.0).

Includes updating the README which was missed for the previous Composer update.

Refs:
* https://github.com/PHPCSStandards/PHPCSUtils/releases
* https://github.com/PHPCSStandards/PHP_CodeSniffer/releases
* https://github.com/PHPCSStandards/PHPCSExtra/releases
* https://github.com/sirbrillig/phpcs-variable-analysis/releases
* https://github.com/PHPCSStandards/PHPCSDevTools/releases
* https://github.com/WordPress/WordPress-Coding-Standards/releases

Author: jrfnl

README.md

@@ -16,11 +16,11 @@ The rulesets use rules from the [WordPress Coding Standards](https://github.com/
 ## Minimal requirements
 
 * PHP 5.4+
-* [PHPCS 3.8.0+](https://github.com/PHPCSStandards/PHP_CodeSniffer/releases)
-* [PHPCSUtils 1.0.9+](https://github.com/PHPCSStandards/PHPCSUtils)
-* [PHPCSExtra 1.2.1+](https://github.com/PHPCSStandards/PHPCSExtra)
-* [WPCS 3.0.0+](https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/releases)
-* [VariableAnalysis 2.11.17+](https://github.com/sirbrillig/phpcs-variable-analysis/releases)
+* [PHPCS 3.13.2+](https://github.com/PHPCSStandards/PHP_CodeSniffer/releases)
+* [PHPCSUtils 1.1.0+](https://github.com/PHPCSStandards/PHPCSUtils)
+* [PHPCSExtra 1.4.0+](https://github.com/PHPCSStandards/PHPCSExtra)
+* [WPCS 3.1.0+](https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/releases)
+* [VariableAnalysis 2.12.0+](https://github.com/sirbrillig/phpcs-variable-analysis/releases)
 
 ## Installation
 

composer.json

@@ -17,17 +17,17 @@
 	],
 	"require": {
 		"php": ">=5.4",
-		"phpcsstandards/phpcsextra": "^1.2.1",
-		"phpcsstandards/phpcsutils": "^1.0.11",
-		"sirbrillig/phpcs-variable-analysis": "^2.11.18",
-		"squizlabs/php_codesniffer": "^3.9.2",
-		"wp-coding-standards/wpcs": "^3.1.0"
+		"phpcsstandards/phpcsextra": "^1.4.0",
+		"phpcsstandards/phpcsutils": "^1.1.0",
+		"sirbrillig/phpcs-variable-analysis": "^2.12.0",
+		"squizlabs/php_codesniffer": "^3.13.2",
+		"wp-coding-standards/wpcs": "^3.2.0"
 	},
 	"require-dev": {
 		"php-parallel-lint/php-parallel-lint": "^1.4.0",
 		"php-parallel-lint/php-console-highlighter": "^1.0.0",
 		"phpcompatibility/php-compatibility": "^9",
-		"phpcsstandards/phpcsdevtools": "^1.0",
+		"phpcsstandards/phpcsdevtools": "^1.2.3",
 		"phpunit/phpunit": "^4 || ^5 || ^6 || ^7 || ^8 || ^9"
 	},
 	"config": {