Update build.yml

Author: james-otten-pan

.github/workflows/build.yml

@@ -16,10 +16,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
 
     - name: Set up Python 3.11
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@65d7f2d534ac1bc67fcd62888c5f4f3d2cb2b236 # v4
       with:
         python-version: "3.11"
 
@@ -97,4 +97,4 @@ jobs:
           name: test-results
           path: .pytest_cache
 
-          
+