[CodeQL] Added bootstrap step (elastic#191746)

## Summary

Added bootstrap step before CodeQL scan. 

Tested the run on push -
https://github.com/elastic/kibana/actions/runs/10615078580/job/29422368227.
The workflow run was successful and had almost the same timing. Although
no new issues were identified, it's safe to keep the bootstrap step
before the scan.

Co-authored-by: Elastic Machine <[email protected]>

.github/workflows/codeql.yml

@@ -32,14 +32,13 @@ jobs:
         languages: ${{ matrix.language }}
         config-file: ./.github/codeql/codeql-config.yml
 
-    # TODO: Possibly required to follow all call paths, however, when enabled, the step below runs out of memory.
-    # Possible workarounds: Apply for access to the GitHub beta where we can use beefier machines, or run it ourselves on Buildkite
-    # - name: yarn kbn bootstrap
-    #   run: |
-    #     mkdir ~/.npm-global
-    #     npm config set prefix '~/.npm-global'
-    #     export PATH=~/.npm-global/bin:$PATH
-    #     yarn kbn bootstrap --no-validate --no-vscode
+    - name: setup node
+      uses: actions/setup-node@v4
+      with:
+        node-version-file: '.nvmrc'
+    - name: yarn kbn bootstrap
+      run: |
+        yarn kbn bootstrap --no-validate --no-vscode
 
     - name: Perform CodeQL Analysis
       uses: github/codeql-action/analyze@883d8588e56d1753a8a58c1c86e88976f0c23449 # v3.26.3