uefi-sct/SctPkg: Fix GUID of EfiCompliant test

The GUID of one of the EfiCompliant test cases is incorrect. The GUID is defined in test case 5.22.1.2.12 in section 2.1.2 of UEFI_SCTII_Case_Spec_2_6_A.pdf, which is available from UEFI Forum:
http://www.uefi.org/sites/default/files/resources/
UEFI2.6SCTII_Final_Release.zip

The GUID value is correct in the code
(gEfiCompliantBbTestPlatformAssertionGuid012), but not in Guid_uefi.h, causing a disconnect between the data file and the code, which resulted in the test case being omitted from SCT.

Cc: G Edhaya Chandran <Edhaya.Chandran@arm.com>
Cc: Eric Jin <eric.jin@intel.com>
Signed-off-by: Samer El-Haj-Mahmoud <samer.el-haj-mahmoud@arm.com>

Reviewed-by: G Edhaya Chandran <edhaya.chandran@arm.com>

uefi-sct/SctPkg/TestCase/UEFI/EFI/Generic/EfiCompliant/BlackBoxTest/Guid_uefi.h

@@ -81,7 +81,7 @@ extern EFI_GUID gEfiCompliantBbTestPlatformAssertionGuid010;
 extern EFI_GUID gEfiCompliantBbTestPlatformAssertionGuid011;
 
 #define EFI_TEST_EFICOMPLIANTBBTESTPLATFORM_ASSERTION_012_GUID \
-{ 0x76A621B0, 0x8C53, 0x407d, {0x84, 0x86, 0x9a, 0x6e, 0x63, 0x32, 0xd3, 0xce }}
+{ 0x76A6A1B0, 0x8C53, 0x407d, {0x84, 0x86, 0x9a, 0x6e, 0x63, 0x32, 0xd3, 0xce }}
 
 extern EFI_GUID gEfiCompliantBbTestPlatformAssertionGuid012;