1/6-1/9 JS2 maintenance alert (#481)

* 1/6-1/9 JS2 maintenance alert

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: ktyle

portal/index.md

@@ -9,6 +9,12 @@
 
 <span style="font-size: 2.6rem;">An education and training hub for the geoscientific Python community</span>
 
+<a href="posts/binderhub_status.html" role="button" class="btn btn-light btn-lg" style="display: flex; align-items: center; font-weight: 600; text-decoration: none; background-color: orange; border: rgba(var(--spt-color-dark), 1);">
+         Pythia BinderHub offline for Jetstream2 Maintenance 1/6/2025 thru 1/9/2025
+ </a>
+
+<br><br>
+
 <a href="posts/fundraiser.html" role="button" class="btn btn-light btn-lg" style="display: flex; align-items: center; font-weight: 600; text-decoration: none; background-color: #ccc; border: rgba(var(--spt-color-dark), 1);">
          Donate to support Project Pythia!
  </a>

portal/posts/binderhub_status.md

@@ -1,10 +1,12 @@
 ---
 blogpost: true
-date: Dec 18, 2024
+date: Dec 31, 2024
 author: Kevin Tyle
 tags: ["binderhub", "maintenance"]
 ---
 
-# Pythia BinderHub Server Maintenance
+# Jetstream2 Maintenance
 
-Our [BinderHub](https://binder.projectpythia.org) will be offline Monday, Dec. 23, from approximately 1530 - 1700 UTC.
+Due to planned [Jetstream2 maintenance](https://jetstream.status.io), our [BinderHub](https://binder.projectpythia.org) will be offline from **1400 UTC 6 Jan 2025** through **1400 UTC 9 Jan 2025**.
+
+Our [alternate BinderHub](https://binder.pythia.2i2c.cloud) will be available as normal during that time.