Bump poison from 4.0.1 to 5.0.0

[dependabot-preview[bot]]

Bumps poison from 4.0.1 to 5.0.0.

Commits

• e5c0867 Release 5.0.0
• e074e17 Remove old cruft
• a68a90b Enhance StreamData tests
• fb2d21d Update ignorable Dialyxir warnings
• 7d89863 Add more projects to benchmarks
• ac17e00 Update README.md with new license information
• a74680f Update supported Elixir version to 1.11+
• 875b8a2 Change the license to BSD Zero Clause License
• 2da7814 Performance improvements
• 1eed4de Fix surrogate testing character ranges
• Additional commits viewable in compare view

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