MAINTAINERS: add missing TF-M collaborators to all repositories

Add all the `West project: trusted-firmware-m` collaborators to
`tf-m-tests` and `psa-arch-tests`. They are repositories highly related
to TF-M.

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

Author: tomi-font

MAINTAINERS.yml

@@ -5823,6 +5823,8 @@ West:
   collaborators:
     - Vge0rge
     - wearyzen
+    - valeriosetti
+    - tomi-font
     - ithinuel
   files: []
   labels:
@@ -5858,6 +5860,8 @@ West:
   collaborators:
     - Vge0rge
     - wearyzen
+    - valeriosetti
+    - tomi-font
     - ithinuel
   files: []
   labels: