changelog: Update for 10.3.0 release

Author: vigh-m

CHANGELOG.md

@@ -1,3 +1,28 @@
+# v10.3.0 (2025-08-25)
+
+## OS Changes
+- Add default bind directories for ephemeral storage ([#632])
+- Add support for `net.toml` under `/usr/share/bottlerocket` for all variants ([#524])
+- Add `containerd-2.1` package ([#621])
+- Add `systemd-257` package ([#581])
+- Add setting to control `static-pods` enablement ([#641])
+
+## Orchestrator Changes
+### Kubernetes
+- Enable `MutableCSINodeAllocatableCount` in kubernetes-1.34 ([#634])
+
+## Build Changes
+- Update `twoliter` to 0.12.0 ([#635])
+- Update bottlerocket-settings-models to 0.13.0 ([#641])
+
+[#524]: https://github.com/bottlerocket-os/bottlerocket-core-kit/pull/524
+[#581]: https://github.com/bottlerocket-os/bottlerocket-core-kit/pull/581
+[#621]: https://github.com/bottlerocket-os/bottlerocket-core-kit/pull/621
+[#632]: https://github.com/bottlerocket-os/bottlerocket-core-kit/pull/632
+[#634]: https://github.com/bottlerocket-os/bottlerocket-core-kit/pull/634
+[#635]: https://github.com/bottlerocket-os/bottlerocket-core-kit/pull/635
+[#641]: https://github.com/bottlerocket-os/bottlerocket-core-kit/pull/641
+
 # v10.2.0 (2025-08-19)
 
 ## Orchestrator Changes