147.0b1 update release date

Author: coreycb

beta/147.0beta.yml

@@ -1,7 +1,7 @@
 release:
-  release_date: '2025-12-10'
+  release_date: '2025-12-11'
   text: |
-    **These notes apply to Thunderbird version 147 beta 1 released December 10, 2025.**
+    **These notes apply to Thunderbird version 147 beta 1 released December 11, 2025.**
 
     **System Requirements:** [Details](/en-US/thunderbird/146.0beta/system-requirements/)