chore: Update alpha.yml workflow to add SSH key setup and commit update manifests

.github/workflows/alpha.yml

@@ -592,7 +592,18 @@ jobs:
           cp -a ../linux_update_manifest/. updates/browser/
           cp -a ../windows_update_manifest/.  updates/browser/ 
 
+      - name: Setup SSH Keys and known_hosts
+        env:
+            SSH_AUTH_SOCK: /tmp/ssh_agent.sock
+        run: |
+            mkdir -p ~/.ssh
+            ssh-keyscan github.com >> ~/.ssh/known_hosts
+            ssh-agent -a $SSH_AUTH_SOCK > /dev/null
+            ssh-add - <<< "${{ secrets.SSH_PRIVATE_KEY }}"
+
       - name: Commit update manifests
+        env:
+          SSH_AUTH_SOCK: /tmp/ssh_agent.sock
         run: |
           git config --global user.email "zen-browser-bot@users.noreply.github.com"
           git config --global user.name "zen-browser-bot"

surfer.json

@@ -27,7 +27,7 @@
       "brandShortName": "Zen Browser",
       "brandFullName": "Zen Browser",
       "release": {
-        "displayVersion": "0.0.0-a.3",
+        "displayVersion": "0.0.0-a.2",
         "github": {
           "repo": "zen-browser/desktop"
         },