Use <template #slotName> form instead of v-slot

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

js/src/views/Event/Event.vue

@@ -399,7 +399,7 @@
         :close-button-aria-label="t('Close')"
       >
         <identity-picker v-model="identity">
-          <template v-slot:footer>
+          <template #footer>
             <footer class="modal-card-foot">
               <button
                 class="button"

js/src/views/Event/MyEvents.vue

@@ -147,12 +147,12 @@
               keypath="Do you wish to {create_event} or {explore_events}?"
               tag="p"
             >
-              <template v-slot:create_event>
+              <template #create_event>
                 <router-link :to="{ name: RouteName.CREATE_EVENT }">{{
                   t("create an event")
                 }}</router-link>
               </template>
-              <template v-slot:explore_events>
+              <template #explore_events>
                 <router-link :to="{ name: RouteName.SEARCH }">{{
                   t("explore the events")
                 }}</router-link>