Can't have Pulsar as reviewer because they aren't "Collaborators"

Ref: https://github.com/apollographql/router/actions/runs/8847976598

.github/workflows/update_apollo_protobuf.yaml

@@ -23,7 +23,6 @@ jobs:
           branch: create-pull-request/apollo-proto-updates
           team-reviewers: |
             router
-            pulsar
           add-paths: |
             apollo-router/src/plugins/telemetry/proto/reports.proto
           delete-branch: true