manifest: use latest zephyr branch

pillo79 · pillo79 · commit b1cbfc92fb3f · 2025-07-16T12:57:58.000+02:00
Switch to 4.2.0-rc3 + outstanding PRs.
diff --git a/west.yml b/west.yml
@@ -21,7 +21,7 @@ manifest:
   projects:
     - name: zephyr
       remote: arduino
-      revision: zephyr-arduino-20250529
+      revision: zephyr-arduino-20250714
       import:
         name-allowlist:
           - cmsis
