release notes for v1.16.0

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

Author: Luap99

RELEASE_NOTES.md

@@ -1,5 +1,12 @@
 # Release Notes
 
+## v1.16.0
+
+* The netavark bridge driver now defaults to using the MTU of the default route interface when no explicit MTU was configured for the network. This helps in environments where a non standard MTU is used. ([containers/podman#20009](https://github.com/containers/podman/issues/20009))
+* Netavark now creates sysctl config files under /run/sysctl.d (only when running as root and with systemd as init system) for the sysctl values we configure for our bridge/veth interface. This ensures that running `sysctl --system` or systemd-sysctl won't revert them back to its original value.
+* The MSRV has been bumped to v1.83.
+* Dependency updates.
+
 ## v1.15.2
 
 * Fixed a bug that caused a thread leak in the dhcp-proxy for each started container. ([#811](https://github.com/containers/netavark/issues/811))