Do not break if format is not in `FORMAT_MAP`

Avoid errors on data such as:
```
        {
            "name": "date_maj",
            "description": "Date de mise à jour des données",
            "examples": "2018/08/08, 2015/12/30",
            "required": true,
            "type": "date",
            "format": "%Y/%m/%d"
        }
```
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dependency_scanning
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sast
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test
 
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