wpcs: align with WPCS v3.0

code complexity: split shibboleth_option_page() into tab functions
composer: allow phpcodesniffer-composer-installer
phpcs: remove installed_paths override (its automatic now)
phpcs: add expected space after function keyword

.github/workflows/wp-plugin-ci-full.yml

@@ -27,4 +27,4 @@ jobs:
 
     - name: Run PHPCS on all files
       run: |
-        vendor/bin/phpcs -q -n --ignore=vendor --runtime-set installed_paths vendor/wp-coding-standards/wpcs --standard=WordPress --report=checkstyle $GITHUB_WORKSPACE | cs2pr
+        vendor/bin/phpcs -q -n --ignore=vendor --standard=WordPress --report=checkstyle $GITHUB_WORKSPACE | cs2pr

.github/workflows/wp-plugin-ci.yml

@@ -32,4 +32,4 @@ jobs:
       run: |
         touch $GITHUB_WORKSPACE/tmp.php
         export CHANGED_FILES=$(git diff --name-only --diff-filter=AM remotes/origin/${{ github.base_ref }} | tr '\n' ' ')
-        vendor/bin/phpcs -q -n --ignore=vendor --runtime-set installed_paths vendor/wp-coding-standards/wpcs --standard=WordPress --report=checkstyle $GITHUB_WORKSPACE/tmp.php $(echo $CHANGED_FILES) | cs2pr
+        vendor/bin/phpcs -q -n --ignore=vendor --standard=WordPress --report=checkstyle $GITHUB_WORKSPACE/tmp.php $(echo $CHANGED_FILES) | cs2pr

assets/js/shibboleth_login_form.js

@@ -6,7 +6,7 @@
  */
 
 jQuery( document ).ready(
-	function( $ ) {
+	function ( $ ) {
 		var body = $( 'body' ),
 			userLogin = $( '#user_login' ),
 			ssoWrap   = $( '#shibboleth-wrap' ),

composer.json

@@ -9,5 +9,10 @@
 	"require": {},
 	"require-dev" : {
 		"wp-coding-standards/wpcs": "@stable"
+	},
+	"config": {
+		"allow-plugins": {
+			"dealerdirect/phpcodesniffer-composer-installer": true
+		}
 	}
 }