chore(changelog): mark 1.13.0 as released

Create a new Unreleased section and move all the current items to
1.13.0. Also move the drive bug fix to 1.12.1.

Signed-off-by: Riccardo Mancini <[email protected]>

Author: Manciukic

CHANGELOG.md

@@ -10,6 +10,18 @@ and this project adheres to
 
 ### Added
 
+### Changed
+
+### Deprecated
+
+### Removed
+
+### Fixed
+
+## [1.13.0]
+
+### Added
+
 - [#5139](https://github.com/firecracker-microvm/firecracker/pull/5139): Added
   support for [PVTime](https://docs.kernel.org/virt/kvm/arm/pvtime.html). This
   is used to support steal time on ARM machines.
@@ -68,9 +80,6 @@ and this project adheres to
   MMDS to set `Content-Type` header correctly (i.e. `Content-Type: text/plain`
   for IMDS-formatted or error responses and `Content-Type: application/json` for
   JSON-formatted responses).
-- [#5260](https://github.com/firecracker-microvm/firecracker/pull/5260): Fixed a
-  bug allowing the block device to starve all other devices when backed by a
-  sufficiently slow drive.
 - [#4207](https://github.com/firecracker-microvm/firecracker/issues/4207): Fixed
   GSI numbering on aarch64 to correctly allow up to 96 devices being attached
   simultaneously.
@@ -82,6 +91,14 @@ and this project adheres to
   "X-aws-ec2-metadata-token-ttl-seconds") in the response to "PUT
   /latest/api/token", as EC2 IMDS does.
 
+## [1.12.1]
+
+### Fixed
+
+- [#5260](https://github.com/firecracker-microvm/firecracker/pull/5260): Fixed a
+  bug allowing the block device to starve all other devices when backed by a
+  sufficiently slow drive.
+
 ## [1.12.0]
 
 ### Added