[build] linux_sdk: Build ubuntu-20 for aarch64 with multiarch instead of cross

ISSUE:
a0f881ff247749f99d1079dae76e2d3db36458de

build/platform/linux_sdk/ya.make

@@ -28,7 +28,7 @@ ELSEIF (ARCH_AARCH64)
     IF (OS_SDK == "ubuntu-16")
         DECLARE_EXTERNAL_RESOURCE(OS_SDK_ROOT sbr:309054781)
     ELSEIF (OS_SDK == "ubuntu-20")
-        DECLARE_EXTERNAL_RESOURCE(OS_SDK_ROOT sbr:6560958864)
+        DECLARE_EXTERNAL_RESOURCE(OS_SDK_ROOT sbr:6601145959)
     ELSE()
         MESSAGE(FATAL_ERROR "There is no ${OS_SDK} SDK for AArch64/ARMv8 64 bit")
     ENDIF()