Merge pull request #254 from chains-project/chore/-ci

fix: sha for setup-python

Author: Stamp9

.github/workflows/run-tests.yml

@@ -24,7 +24,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Python
-        uses: actions/setup-python@v6.1.0
+        uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 #v6.1.0
         with:
           python-version: "3.14.2"