deps: rename trust-dns dependabot group

These dependencies have been renamed and the old ones are no longer present in our dependency tree.

Pull-Request: #4857.

.github/dependabot.yml

@@ -9,9 +9,9 @@ updates:
       prefix: "deps"
     rebase-strategy: "disabled"
     groups:
-      trust-dns:
+      hickory-dns:
         patterns:
-          - "trust-dns-*"
+          - "hickory-*"
           - "async-std-resolver"
       opentelemetry:
         patterns: