ci: add setup-node to lint and e2e-test jobs

Hardened runners may not have Node.js pre-installed (reported in
#unblock-github-action-for-eng). Add explicit setup-node step to
the lint and e2e-test jobs which run npm commands but previously
relied on the runner having Node available.

The unit-test and release build jobs already have setup-node.
The coverage and dco-check jobs don't run npm commands and don't
need it.

Co-authored-by: Isaac

Author: shivam2680

.github/workflows/main.yml

@@ -19,6 +19,9 @@ jobs:
       labels: linux-ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+        with:
+          node-version: 20
       - name: Get JFrog OIDC token
         run: |
           set -euo pipefail
@@ -151,6 +154,9 @@ jobs:
 
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
+        with:
+          node-version: 20
       - name: Get JFrog OIDC token
         run: |
           set -euo pipefail