fix: fix Version decoding

[alexanderwe]

📝 Description

This PR fixes the decoding of the Version type.

While the encoding of this type was using a single value container no explicit decoding init was specified. This led to the fact the default synthesised decoding initialiser is used. But this one will expect the full fletched object to be encoded. This leads to decoding errors, like the following:

Error: typeMismatch(Swift.Dictionary<Swift.String, Any>, Swift.DecodingError.Context(codingPath: [
    CodingKeys(stringValue:"projects", intValue: nil),
    _CodingKey(stringValue: "Index 7", intValue: 7),
    CodingKeys(stringValue: "lastUpgradeCheck", intValue: nil)
],
debugDescription: "Expected to decode Dictionary<String, Any> but found a string instead.",
underlyingError: nil)
)

This PR now implements a custom decoding initialiser matching the encoding.

[fortmarek]

Thanks 🙇

[alexanderwe]

Thanks 🙇

No problem 👍 thank you very much for the fast merge