Disable harden-runner step for nightly build

This was re-enabled as the previous issue with gsutil is no longer
relevant due to our move to OCI buckets.

However, we are now encountering a different error due to the proxy
config that's preventing npm resolving the registry IP during the
release pipeline's build-static step. This appears similar to a
known issue with harden-runner reported with podman containers.

Author: AlanGreene

.github/workflows/nightly-build.yml

@@ -36,10 +36,10 @@ jobs:
       id-token: write
 
     steps:
-      - name: Harden runner
-        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
-        with:
-          egress-policy: audit
+      # - name: Harden runner
+      #   uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
+      #   with:
+      #     egress-policy: audit
 
       - name: Checkout repository
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2