chore: [StepSecurity] Apply security best practices (#45)

Co-authored-by: stepsecurity-app[bot] <188008098+stepsecurity-app[bot]@users.noreply.github.com>
Co-authored-by: krystal <56278409+theekrystallee@users.noreply.github.com>

Author: stepsecurity-app[bot]

.github/workflows/update-node-tables.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: hashgraph-docs-linux-medium
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
 
       - name: Install dependencies
         run: sudo apt-get install -y jq