Fix UWP sample build, bump default build number

Proposed changes

Fix build in samples repo
bump build number to express the diff to the first 1.5.372 release

Related Issues

Fixes #

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[ ] Bugfix (non-breaking change which fixes an issue)
[ ] Enhancement (non-breaking change which adds functionality)
[ ] Test enhancement (non-breaking change to increase test coverage)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected, requires version increase of Nuget packages)
[ ] Documentation Update (if none of the other choices apply)

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Further comments

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OPCFoundation / UA-.NETStandard