changelog: add cars stuff

CHANGELOG.md

@@ -1,5 +1,6 @@
 # Kubo Changelogs
 
+- [v0.23](docs/changelogs/v0.23.md)
 - [v0.22](docs/changelogs/v0.22.md)
 - [v0.21](docs/changelogs/v0.21.md)
 - [v0.20](docs/changelogs/v0.20.md)

docs/changelogs/v0.23.md

@@ -0,0 +1,27 @@
+# Kubo changelog v0.23
+
+- [v0.23.0](#v0230)
+
+## v0.23.0
+
+- [Overview](#overview)
+- [🔦 Highlights](#-highlights)
+ - [Gateway: the root of the CARs are no longer meaningful](#gateway-the-root-of-the-cars-are-no-longer-meaningful)
+- [📝 Changelog](#-changelog)
+- [👨‍👩‍👧‍👦 Contributors](#-contributors)
+
+### Overview
+
+### 🔦 Highlights
+
+#### Gateway: the root of the CARs are no longer meaningful
+
+When requesting a CAR from the gateway, the root of the CAR might no longer be
+meaningful. By default, the CAR root will be the last resolvable segment of the
+path. However, in situations where the path cannot be resolved, such as when
+the path does not exist, a CAR will be sent with a root of `bafkqaaa` (empty CID).
+This CAR will contain all blocks necessary to validate that the path does not exist.
+
+### 📝 Changelog
+
+### 👨‍👩‍👧‍👦 Contributors