Merge pull request #73 from ramsey/update-phly-keep-a-changelog

fix: update phly/keep-a-changelog

Author: Ocramius

composer.json

@@ -15,7 +15,7 @@
         "laminas/laminas-diactoros": "^2.3.1",
         "lcobucci/clock": "^1.3",
         "monolog/monolog": "^2.1",
-        "phly/keep-a-changelog": "^2.8",
+        "phly/keep-a-changelog": "^2.9",
         "php-http/curl-client": "^2.1.0",
         "php-http/discovery": "^1.9.1",
         "php-http/httplug": "^2.1.0",