Revert "fix secrets stored in json format (#466)" (#471)

* Revert "fix secrets stored in json format (#466)"

This reverts commit b9f4d16071.

* fix build: use new Verified Publisher image hashicorp/vault

src/retries.test.js

@@ -66,4 +66,4 @@ describe('exportSecrets retries', () => {
             done();
         });
     });
-});
+});