Update gitsearch.yml

src/main/docker/gitsearch.yml

 version: '3.5'
 services:
   gitsearch-app:
-    image: docker.uibk.ac.at:443/csar9407/gitsearch:development-91a57b07dc1570c874d3331146a4d84dc84e1d71
+    image: docker.uibk.ac.at:443/csar9407/gitsearch:development-8c73612a7c7caddaa05981097d66096eb815cc2d
     container_name: sharing_search
     environment:
       - _JAVA_OPTIONS=-Xmx512m -Xms256m