Update upcoming_hackathons.yml

Author: DCGenomics

_data/upcoming_hackathons.yml

@@ -19,4 +19,14 @@
   loc: "Kaggle Research Dataset Challenge"
   link: https://www.kaggle.com/allen-institute-for-ai/CORD-19-research-challenge
   community access:
+  
+- date: "January 11-14, 2022"
+  loc: "Worldwide Dementia Hackathon -- Stay Tuned"
+  link: 
+  community access:  
+  
+- date: "March 9-11, 2022"
+  loc: "Bringing Complex Genomic Data to the Clinic III -- Carnegie Mellon Libraries/JHU"
+  link: 
+  community access: