Update debian to fix CI while updating Node (facebook#37841)

Summary:
Pull Request resolved: facebook#37841

While bumping node from 16 to 18 in D46583997, Circle CI was failing since it  expects version ">=18" but got "16.20.0".

The job is using a standard `debian:11` container without setting up Node explicitly - so it’s using whatever is built in to that image.

Hence replacing `debian:11` with a later version.

**Changelog:**
[General] [Fixed] - Update debian version

Differential Revision: https://internalfb.com/D46673999

fbshipit-source-id: c654a2763546b5d44624cde12d74a994b0bfd818

.circleci/config.yml

@@ -1132,7 +1132,7 @@ jobs:
   # -------------------------
   prepare_hermes_workspace:
     docker:
-      - image: debian:11
+      - image: debian:bullseye
     environment:
       - HERMES_WS_DIR: *hermes_workspace_root
       - HERMES_VERSION_FILE: "packages/react-native/sdks/.hermesversion"