config: Update edk2 revision to workaround "subhook" issue

Checking out edk2 has started failing due to one of it's submodule dependencies, https://github.com/Zeex/subhook.git, being removed from GitHub:

Cloning into '/data_nvme0n1/ryarob01/shrinkwrap_demo/workspace/edk2/edk2/UnitTestFrameworkPkg/Library/SubhookLib/subhook'... remote: Repository not found. fatal: repository 'https://github.com/Zeex/subhook.git/' not found fatal: clone of 'https://github.com/Zeex/subhook.git' into submodule path '/data_nvme0n1/ryarob01/shrinkwrap_demo/workspace/edk2/edk2/UnitTestFrameworkPkg/Library/SubhookLib/subhook' failed Failed to clone 'UnitTestFrameworkPkg/Library/SubhookLib/subhook'. Retry scheduled

This has been resolved in edk2's master branch by linking to a mirror of the project. But that commit is not yet in any stable tag. So for now, let's fix to the SHA of the fix. Once the next stable tag is out, we will need to update again.

However, updating to this SHA breaks the build because edk2-platforms is out of date. So let's update it to its latest commit also. But this is broken for RELEASE builds, so we must build DEBUG. A patch will be merged soon to fix RELEASE, so we will update to that once merged.

Signed-off-by: Ryan Roberts ryan.roberts@arm.com