build: Updating mediawiki/mediawiki-phan-config to 0.15.1

Change-Id: Ib37d65c68fd8767f9f87b8bab1cae5dc455dcb56

diff --git a/composer.json b/composer.json
index 2c8c6cc..b7449b1 100644
--- a/composer.json
+++ b/composer.json

@@ -1,7 +1,7 @@
 {
 	"require-dev": {
 		"mediawiki/mediawiki-codesniffer": "45.0.0",
-		"mediawiki/mediawiki-phan-config": "0.15.0",
+		"mediawiki/mediawiki-phan-config": "0.15.1",
 		"mediawiki/minus-x": "1.1.3",
 		"php-parallel-lint/php-console-highlighter": "1.0.0",
 		"php-parallel-lint/php-parallel-lint": "1.4.0"