modules: tf-m: fix innocuous build warning

This removes the TF-M CMake warning "Actual TF-M version is not
available from Git repository.  Settled to v2.1.0" which always
got triggered because Zephyr's TF-M repo does not have the upstream
Git tags.

Signed-off-by: Tomi Fontanilles <[email protected]>

Author: tomi-font

west.yml

@@ -327,7 +327,7 @@ manifest:
       groups:
         - crypto
     - name: trusted-firmware-m
-      revision: f8d3a903578192d226ac1552f383d95b94ee8780
+      revision: 826c4a97053264d45a4fd76755f947b6b3a573f3
       path: modules/tee/tf-m/trusted-firmware-m
       groups:
         - tee