chore: Update actions/setup-python action to v5.6.0

Author: seqeralabs-renovate[bot]

.github/workflows/linting.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4
 
       - name: Set up Python 3.12
-        uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5
+        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: "3.12"
 
@@ -36,7 +36,7 @@ jobs:
       - name: Install Nextflow
         uses: nf-core/setup-nextflow@v2
 
-      - uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: "3.12"
           architecture: "x64"