memfault: upgrade to 1.30.0

Upgrade the Memfault SDK to version 1.30.0, which includes removal of a
deprecated Zephyr bluetooth API for Zephyr >4.2.

Signed-off-by: Gillian Minnehan <[email protected]>

Author: gminn

west.yml

@@ -246,7 +246,7 @@ manifest:
       remote: throwtheswitch
     - name: memfault-firmware-sdk
       path: modules/lib/memfault-firmware-sdk
-      revision: 1.29.0
+      revision: 1.30.0
       remote: memfault
     - name: bsim
       repo-path: bsim_west