Tests: Update BuildDepends test for VS 17.10

The test project now rebuilds `link_depends_no_shared_exe` in `Debug`
builds.  MSBuild `-v:diag` shows:

    Source compilation required:
    input C:\...\DEBUG\LINK_DEPENDS_NO_SHARED_LIB.PDB is newer
    than output C:\...\DEBUG\LINK_DEPENDS_NO_SHARED_EXE.EXE.

Use the `Release` configuration instead.