Update dependency @release-it/keep-a-changelog to v6

Author: renovate[bot]

package.json

@@ -5,7 +5,7 @@
   },
   "description": "TODO",
   "devDependencies": {
-    "@release-it/keep-a-changelog": "5.0.0",
+    "@release-it/keep-a-changelog": "6.0.0",
     "@snowcoders/renovate-config": "3.0.0-beta.17",
     "@typescript-eslint/eslint-plugin": "8.19.1",
     "@typescript-eslint/parser": "8.19.1",