"Date de sortie" cannot be validated by form for 2021

[ghiss75]

In form-data.json, "pattern" used for "datedesortie" does prohibit years > 2020

attestation-deplacement-derogatoire-covid-19/src/form-data.json

Line 90 in 1fc8aed

"pattern": "^([0][1-9]|[1-2][0-9]|30|31)\/([0][1-9]|10|11|12)\/(19[0-9][0-9]|20[0-1][0-9]|2020)",

Making validation of form at https://media.interieur.gouv.fr/attestation-deplacement-derogatoire-covid-19/ impossible

[ghiss75]

In fact, the validation pattern of the form for "live feedback" is not conforming to the format of the placeholder:

This pattern is expecting something of the format: 20/03/2021:

that is not working because, the pattern does not support year > 2020

Still, when the form is submitted, the field is validated with following pattern:

attestation-deplacement-derogatoire-covid-19/src/js/form-util.js

Lines 34 to 36 in 1fc8aed

	'#field-datesortie': {
	pattern: /\d{4}-\d{2}-\d{2}/g,
	},

that is expecting the same format as the placeholder.

From a user perspective it could be confusing as when entering a date conforming to the placeholder, the "live feedback" will indicate an incorrect input, still the form will be validated when clicking on the generate button.