Fix collab deploy (#13076)

Release Notes:

- N/A

.github/workflows/deploy_collab.yml

@@ -75,6 +75,9 @@ jobs:
         with:
           clean: false
 
+      - name: Set up default .cargo/config.toml
+        run: cp ./.cargo/collab-config.toml ~/.cargo/config.toml
+
       - name: Build docker image
         run: docker build . --build-arg GITHUB_SHA=$GITHUB_SHA --tag registry.digitalocean.com/zed/collab:$GITHUB_SHA