.github: pin js-yaml major version to fix CI

Signed-off-by: Cory Snider <csnider@mirantis.com>

Author: corhere

.github/workflows/.test.yml

@@ -61,7 +61,7 @@ jobs:
       -
         name: Deps
         run: |
-          npm install js-yaml
+          npm install js-yaml@v4-legacy
       -
         name: Set outputs
         id: set