Update previous_hackathons.yml

Author: DCGenomics

_data/previous_hackathons.yml

@@ -1,3 +1,23 @@
+- date: "October 30-November 3, 2023"
+  loc: "ELIXIR Biohackathon"
+  link: https://biohackathon-europe.org/
+  community access:  
+
+- date: "October 19-21, 2023"
+  loc: "Data Management and Extraction for Large Learning Models at Carnegie Mellon"
+  link: https://www.library.cmu.edu/about/news/2023-08/hackathon-2023
+  community access:  
+
+- date: "August 30-September 1, 2023"
+  loc: "Pan-Structural Variant Hackathon in the Cloud"
+  link: https://www.hgsc.bcm.edu/events/hackathon
+  community access:  
+
+- date: "July 22-23, 2023"
+  loc: "BOSC CoFest 2023, in Lyon, France"
+  link: https://www.open-bio.org/events/bosc-2023/obf-bosc-collaborationfest-2023/
+  community access:  
+    
 - date: "May 15-16, 2023"
   loc: "2023 Bio-IT World FAIR Data Hackathon"
   link: https://www.bio-itworldexpo.com/fair-data-hackathon