Bump currencyconverter from 0.17.32 to 0.18

[dependabot[bot]]

Bumps currencyconverter from 0.17.32 to 0.18.

Commits

• ccec5c9 Update data
• f77851a Update data
• 4f8b5a5 Drop Python<3.9 support
• 935ea9a Remove remnant of Python2
• 4b06bc4 Update data
• 33f7dd3 Update data
• 635c76c Update data
• 41ac745 Update data
• e90ab87 Update data
• f94d418 Update data
• Additional commits viewable in compare view

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