autobot: Update trusted-firmware-m

Update trusted-firmware-m to TF-Mv1.8.1.

Signed-off-by: autobot <autobot-noreply@arm.com>

cmake/DeclareSdkComponents.cmake

@@ -198,7 +198,7 @@ FetchContent_Declare(
 FetchContent_Declare(
     trusted-firmware-m
     GIT_REPOSITORY  https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git
-    GIT_TAG         TF-Mv1.8.0
+    GIT_TAG         TF-Mv1.8.1
     GIT_SHALLOW     ON
     GIT_PROGRESS    ON
     # Note: This prevents FetchContent_MakeAvailable() from calling