Update Makefile

Author: staabm

Makefile

@@ -173,7 +173,7 @@ infection:
 	composer install --working-dir build-infection --no-interaction --no-progress
 	php build-infection/bin/infection-config.php --source-directory='build/PHPStan/Build'> infection.json5
 	version=$(shell jq -r '.packages[] | select(.name == "infection/infection") | .version' build-infection/composer.lock); \
-	wget https://github.com/infection/infection/releases/download/$$version/infection.phar;
+	wget https://github.com/infection/infection/releases/download/$$version/infection.phar --no-clobber;
 	chmod +x infection.phar
 	php infection.phar --ignore-msi-with-no-mutations --logger-text=php://stdout
 	rm infection.json5 infection.phar