prepare for "close to apply sponsor"

apps/web/app/components/SponsorPageSection.vue

@@ -133,10 +133,9 @@ const personalSponsorInfo: PersonalSponsorInfo = {
         <VFDateTime :date="secondPeriodEnd" :time="endPeriodTime" />
       </template>
 
-      <div class="sponsor-buttons">
+      <div v-if="config.public.availableApplySponsor" class="sponsor-buttons">
         <!-- 申し込む -->
         <VFLinkButton
-          v-if="config.public.availableApplySponsor"
           class="sponsor-button"
           href="https://forms.gle/paxZqz55oXLE4Njn9"
           background-color="vue-green/200"

apps/web/app/content/en/sponsor.md

@@ -1,3 +1 @@
-In order to make Vue Fes Japan 2024 a better conference where people involved in Vue.js gather, we are looking for sponsors. Please refer to the materials for detailed information such as sponsorship plans.
-
-A second round of applications is currently being accepted. Companies whose plans were confirmed in the first round of applications can still apply for additional plans.
+The sponsorship application period has ended as of August 31, 2024. We would like to extend our gratitude to the companies that applied.

apps/web/app/content/ja/sponsor.md

@@ -1,3 +1 @@
-Vue.js に関わる人々が集まる Vue Fes Japan 2024 をより良いカンファレンスにするため、スポンサー募集をします。スポンサープランなどの詳しい内容は資料をご参照ください。
-
-現在、二次募集を実施しております。一次募集でプランが確定された企業様におかれましても、追加お申し込みも可能となっています。
+スポンサー募集は 2024/8/31（土）をもって締め切りました。応募いただいた企業におかれましては感謝申し上げます。