Bug 1772946 - Update cargo-vet toolchain. r=glandium

Differential Revision: https://phabricator.services.mozilla.com/D148453

taskcluster/ci/fetch/toolchains.yml

@@ -664,4 +664,4 @@ cargo-vet:
     fetch:
         type: git
         repo: https://github.com/bholley/cargo-vet
-        revision: 6327bc1ee12f73a4cf74c639e94cb7115a5282d5
+        revision: 97cdbfdab0ed3008160cf5bee534fb534fce08c5