Glob workspace members are not handled

[drahnr]

Describe the bug

[2021-04-16T06:24:49Z WARN  cargo_spellcheck::traverse] Opening manifest from member failed bin/*/node
[2021-04-16T06:24:49Z WARN  cargo_spellcheck::traverse] Opening manifest from member failed bin/*/runtime
[2021-04-16T06:24:49Z WARN  cargo_spellcheck::traverse] Opening manifest from member failed fuzz/*
[2021-04-16T06:24:49Z WARN  cargo_spellcheck::traverse] Opening manifest from member failed modules/*
[2021-04-16T06:24:49Z WARN  cargo_spellcheck::traverse] Opening manifest from member failed primitives/*
[2021-04-16T06:24:49Z WARN  cargo_spellcheck::traverse] Opening manifest from member failed primitives/chains/*
[2021-04-16T06:24:49Z WARN  cargo_spellcheck::traverse] Opening manifest from member failed relays/*
[2021-04-16T06:24:49Z WARN  cargo_spellcheck::traverse] Opening manifest from member failed relays/clients/*
[2021-04-16T06:24:49Z WARN  cargo_spellcheck::traverse] Opening manifest from member failed relays/generic/*

To Reproduce

Steps to reproduce the behaviour:

1. A project with a Cargo.toml which has a workspace which contains glob patterns
2. Run cargo spellcheck ...
3. observe

Expected behavior

Honour glob patterns

Please complete the following information:

• System: Fedora 33
• Obtained: git, cargo
• Version: 0.7.x / 0.8.0-beta.1