fix: accessibilité des composants (#70)

| Numéro du ticket | Titre du ticket |
|------------------|-----------------|
|                  |                 |

## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

---------

Co-authored-by: admin malio <malio@yuno.malio.fr>
Co-authored-by: THOLOT DECHENE Matthieu <matthieu@yuno.malio.fr>
Co-authored-by: matthieu <matthieu@yuno.malio.fr>
Reviewed-on: #70
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

app/components/malio/checkbox/Checkbox.vue

@@ -180,6 +180,11 @@ const onChange = (event: Event) => {
   border-color: rgb(0, 0, 0);
 }
 
+.inp-cbx:focus-visible + .cbx span:first-child {
+  outline: 2px solid rgb(var(--m-primary) / 1);
+  outline-offset: 2px;
+}
+
 .cbx span:first-child svg {
   position: absolute;
   top: 2px;