ACPICA: Update maintainers information

Update MAINTAINERS to reflect ACPICA maintainership changes.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/12876647.O9o76ZdvQC@rafael.j.wysocki

Author: rafaeljw

MAINTAINERS

@@ -318,7 +318,7 @@ F:	drivers/firmware/efi/cper*
 
 ACPI COMPONENT ARCHITECTURE (ACPICA)
 M:	"Rafael J. Wysocki" <rafael@kernel.org>
-M:	Robert Moore <robert.moore@intel.com>
+M:	Saket Dumbre <saket.dumbre@intel.com>
 L:	linux-acpi@vger.kernel.org
 L:	acpica-devel@lists.linux.dev
 S:	Supported