chore(deps-dev): update actions/setup-python action to v5.6.0

Author: renovate[bot]

.github/workflows/pr-build.yaml

@@ -27,7 +27,7 @@ jobs:
         with:
           version: v3.4.0
 
-      - uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: 3.13
 
@@ -199,7 +199,7 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@5119fcb9089d432beecbf79bb2c7915207344b78 #v3.5
 
-      - uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
+      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
         with:
           python-version: 3.13