chore: auto-update README (awesome-mlss#330)

Author: sshkhr

README.md

@@ -47,6 +47,7 @@ Machine Learning Summer School on Reliability & Safety|Machine Learning, ML for
 LMH Oxford: AI and Machine Learning - Theory and Practice|Machine Learning, Computer Vision, Natural Language Proc|Oxford, UK|May 04, 2026 <br>⏰ [Add to Calendar](https://awesome-mlss.com/summerschool/lmh_aiml_tp26)|Jun 29 - Jul 17, 2026|[Details](https://awesome-mlss.com/summerschool/lmh_aiml_tp26)
 LMH Oxford: Advanced AI - Generative AI and Deep Unsupervised Learning|Machine Learning, Generative AI|Oxford, UK|May 04, 2026 <br>⏰ [Add to Calendar](https://awesome-mlss.com/summerschool/lmh_genai26)|Jun 29 - Jul 17, 2026|[Details](https://awesome-mlss.com/summerschool/lmh_genai26)
 Oxford Machine Learning Summer School - MLx HEALTH & BIO|Machine Learning, ML for Health, ML for Biology|Oxford, United Kingdom|May 22, 2026 <br>⏰ [Add to Calendar](https://awesome-mlss.com/summerschool/oxford_mlxbio26)|Jul 10 - Jul 13, 2026|[Details](https://awesome-mlss.com/summerschool/oxford_mlxbio26)
+Statistics and Learning Theory Summer School|Machine Learning, ML Theory|Aghveran, Armenia|Jun 15, 2026 <br>⏰ [Add to Calendar](https://awesome-mlss.com/summerschool/slt2026)|Jul 12 - Jul 19, 2026|[Details](https://awesome-mlss.com/summerschool/slt2026)
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 ## Contributing Guide