PHPCS doesn't like spaces in the sniffs string

plugins/templates/matrix.yml

@@ -61,12 +61,8 @@ PHPCS:
     - composer global require automattic/vipwpcs
     - composer global require phpcompatibility/phpcompatibility-wp
     - phpcs --config-set installed_paths \
-        $HOME/.composer/vendor/wp-coding-standards/wpcs, \
-        $HOME/.composer/vendor/automattic/vipwpcs, \
-        $HOME/.composer/vendor/phpcompatibility/php-compatibility, \
-        $HOME/.composer/vendor/phpcompatibility/phpcompatibility-paragonie, \
-        $HOME/.composer/vendor/phpcompatibility/phpcompatibility-wp, \
-        $HOME/.composer/vendor/sirbrillig/phpcs-variable-analysis
+        $HOME/.composer/vendor/wp-coding-standards/wpcs,$HOME/.composer/vendor/automattic/vipwpcs,$HOME/.composer/vendor/phpcompatibility/php-compatibility,$HOME/.composer/vendor/phpcompatibility/phpcompatibility-paragonie,$HOME/.composer/vendor/phpcompatibility/phpcompatibility-wp,$HOME/.composer/vendor/sirbrillig/phpcs-variable-analysis
+    - phpcs --config-show
   script:
     - phpcs -n