changelog: add entry for issue 2709

Signed-off-by: Diana Popa <[email protected]>

Author: dianpopa

CHANGELOG.md

@@ -7,6 +7,9 @@
 - Adapt T2 and C3 CPU templates for kernel 5.10. Firecracker was not previously
   masking some CPU features of the host or emulated by KVM, introduced in more
   recent kernels: `umip`, `vmx`, `avx512_vnni`.
+- Fixed incorrect propagation of init parameters in kernel commandline.
+  Related to:
+  [#2709](https://github.com/firecracker-microvm/firecracker/issues/2709).
 
 ## [0.25.1]