EBR-105: update yarn settings

Author: 915-Misan-Teodora

.github/workflows/run-python-tests.yml

@@ -48,7 +48,7 @@ jobs:
 
     - name: Install Yarn
       run: |
-        npm install --global yarn --frozen-lockfile
+        npm install --global yarn
         yarn -v
 
     - name: Install dependencies