actions update

Author: agimenog

.github/workflows/bot_build.yml

@@ -10,7 +10,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
 
       - name: Git clone software-layer-scripts
         run: git clone https://github.com/EESSI/software-layer-scripts