ci(workflows): refresh deprecated node setup action

Update the chrome-bridge CI job to the current setup-node pin already used by the provenance workflow so GitHub stops forcing the deprecated Node 20 action runtime.

Author: root

.github/workflows/ci.yml

@@ -54,7 +54,7 @@ jobs:
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
 
-      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
         with:
           node-version: "22"
           cache: npm