Add OTel NeurIPS 2026 spotlight news item

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: Imtiazkarimik23

_data/news.yml

@@ -1,3 +1,6 @@
+- date: September 29, 2026
+  headline: OTel got accepted to the NeurIPS 2026 Datasets and Benchmarks Track as a spotlight!
+
 - date: September 9, 2026
   headline: <a href='/docs/acsac_2026_a2abreak.pdf'>A2ABreak</a> got accepted to ACSAC 2026!