Changes to Export translations

added the pattern ^[a-z0-9]{9}$ to the path request parameter projectId

added the pattern ^[a-z]{2}(-[A-Z]{2})?$ to the path request parameter localeId

added FileUri to the fileUri request property allOf list

the response property response/errors/items/details became nullable for the status 400

the response property response/errors/items/details became nullable for the status 401

the response property response/errors/items/details became nullable for the status 429

the response property response/errors/items/details became nullable for the status 500

the response property response/errors/items/key became nullable for the status 400

the response property response/errors/items/key became nullable for the status 401

the response property response/errors/items/key became nullable for the status 429

the response property response/errors/items/key became nullable for the status 500

the fileUri request property type was generalized from string to no type

added the new required request property file