Add yarn install step (#1532)

* Update agent-sdk versions

* Update agent SDK versions

* Refactor codecs, enhance logs

* Add yarn install step

Author: humanagent

.github/workflows/validate-regression.yml

@@ -56,6 +56,9 @@ jobs:
         run: corepack prepare [email protected] --activate
         shell: bash
 
+      - name: Install dependencies
+        run: yarn install
+
       - name: Run regression tests
         run: yarn regression