ci(benchmark): remove git credentials after checkout (#770)

Signed-off-by: Frazer Smith <[email protected]>

Author: Fdawgs

Diff for: .github/workflows/benchmark.yml

@@ -26,7 +26,7 @@ jobs:
       - uses: actions/setup-node@v4
         with:
           check-latest: true
-          node-version: 18
+          node-version: 20
 
       - name: Install
         run: |
@@ -46,6 +46,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           ref: 'main'
+          persist-credentials: false
 
       - name: Install
         run: |