fix: Update release.yml (#531)

Removes errant colon, which was causing the command to fail.

Author: willum070

.github/workflows/release.yml

@@ -80,7 +80,7 @@ jobs:
         run: |
           IFS=$'\n'
           DELETED_WORKSPACES_ARRAY=({{ steps.get_deleted.outputs.deleted_workspaces }})
-          echo: "Removing deleted project output:"
+          echo "Removing deleted project output:"
           for workspace in "${DELETED_WORKSPACES_ARRAY[@]}"; do
             echo "  - samples/$workspace"
             rm -rf dist/samples/$workspace