tests: compare_signed.bats: add exception for v2.14.1 release

The issue with sof-PLAT-openmodules.ri still persists in 2.14.1
and now also affects the WCL binary. Add an exception to the test
case.

Link: thesofproject/sof#10056
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

Author: kv2019i

tests/compare_signed.bats

@@ -148,6 +148,11 @@ test_init()
             *v2.13.x/sof-ipc4-v2.13)
                 assert_eq_signed $status 1;;
 
+            # same issue with sof-PLAT-openmodules.ri for both PTL and WCL
+            # https://github.com/thesofproject/sof/issues/10056
+            *v2.14.x/sof-ipc4-v2.14.1)
+                assert_eq_signed $status 2;;
+
             # No difference
             *)
                 assert_eq_signed $status 0;;