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fix(CYVatValidator): convert checksum char to ASCII value correctly (#36

)

Update Copyright (#33)

Fix AT validation (#29)

Co-authored-by: Adrian Popescu <adrian.popescu@groupvery.com>

[global.json] Bump sdk version to 9.0.101

Fix #24 (#26)

[FR] Modify the regex to ensure it matches exactly 11 characters.

Merge branch 'master' of https://github.com/zapadi/vies-dotnet

Fix typo