manifest: update ambiq microchip and silab hals to pickup the cmsis_6 fixes

Update various hals to pickup the cmsis_6 related fixes.

Signed-off-by: Fabio Baltieri <[email protected]>

Author: fabiobaltieri

west.yml

@@ -154,7 +154,7 @@ manifest:
       groups:
         - hal
     - name: hal_ambiq
-      revision: 84ccbfc0b6041ba9f5688337c78bad99da5448ce
+      revision: pull/56/head
       path: modules/hal/ambiq
       groups:
         - hal
@@ -195,7 +195,7 @@ manifest:
       groups:
         - hal
     - name: hal_microchip
-      revision: 32a79d481c056b2204a5701d5a5799f9e5130dd7
+      revision: pull/35/head
       path: modules/hal/microchip
       groups:
         - hal
@@ -235,7 +235,7 @@ manifest:
       groups:
         - hal
     - name: hal_silabs
-      revision: 190a144a16bed9a938a94543ed5bbc70c0552e0f
+      revision: pull/122/head
       path: modules/hal/silabs
       groups:
         - hal