fix(ExpirationRules): replace Vue 2 @update:value with @update:modelValue on NcTextField

NcTextField changed its emit from `update:value` to `update:modelValue`
in @nextcloud/vue v9 (Vue 3). Replace @update:value with @update:modelValue
on the three NcTextField instances (maximum validity, renewal interval and
expiry in days) so the auto-save callbacks are correctly triggered.

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

src/views/Settings/ExpirationRules.vue

@@ -19,7 +19,7 @@
 				class="sharing__input"
 				:label="t('libresign', 'Maximum validity')"
 				:placeholder="t('libresign', 'Maximum validity')"
-				@update:value="saveMaximumValidity" />
+				@update:modelValue="saveMaximumValidity" />
 		</fieldset>
 		<NcCheckboxRadioSwitch type="switch"
 			v-model="enableRenewalInterval"
@@ -33,7 +33,7 @@
 				class="sharing__input"
 				:label="t('libresign', 'Renewal interval')"
 				:placeholder="t('libresign', 'Renewal interval')"
-				@update:value="saveRenewalInterval" />
+				@update:modelValue="saveRenewalInterval" />
 		</fieldset>
 		<fieldset id="settings-certificate-validity" class="sharing__sub-section">
 			{{ t('libresign', 'The length of time for which the generated certificate will be valid, in days.') }}
@@ -42,7 +42,7 @@
 				class="sharing__input"
 				:label="t('libresign', 'Expiration in days')"
 				:placeholder="t('libresign', 'Expiration in days')"
-				@update:value="saveExpiryInDays" />
+				@update:modelValue="saveExpiryInDays" />
 		</fieldset>
 	</NcSettingsSection>
 </template>