default.xml: Bump meta-arm revision

* 29dc214 : arm/edk2-firmware: cherry pick gcc 12.x compatibility patches - Maciej Borzecki
* 6301b32 : arm-bsp/sdcard-image-n1sdp: Fix N1SDP dependencies - Adam Johnston
* 2b392eb : arm-bsp/edk2-firmware: Add NT_FW_CONFIG to N1SDP to fix aborts when accessing virtual memory - Adam Johnston
* 01aa543 : arm-bsp/sdcard-image-n1sdp: N1SDP trusted boot - Adam Johnston
* 1e13b8b : arm-bsp/scp-firmware: N1SDP trusted boot - Adam Johnston
* d9c6ff9 : arm-bsp/trusted-firmware-a: N1SDP trusted boot - Adam Johnston
* 8c69397 : arm/oeqa: Fix regex warning in linuxboot test case - Peter Hoyes

Signed-off-by: Marta Rybczynska <marta.rybczynska@huawei.com>