default.xml: Bump aehs29/meta-freertos revision

* 0d0f168 : freertos: Update to latest release 202012.04-LTS (kernel v10.4.3 Patch 2) - Alejandro Enedino Hernandez Samaniego
* 22c9093 : meta-freertos: Add kirkstone as stable release - Alejandro Enedino Hernandez Samaniego
* 765ea05 : freertos.conf: Drop BB_DANGLINGAPPENDS_WARNONLY - Andrei Gherzan

Signed-off-by: Pavel Zhukov <pavel.zhukov@huawei.com>