Pin Python version action to requested source commit

Use c1aa1190277c85c93ab142e8909bcd11453ce30b from microsoft/vscode-python-ci.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 956d3afd-ae0b-486c-a60c-3a6276c23213

Author: edvilme

.github/workflows/check-python-versions.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Check supported Python versions
-        uses: microsoft/vscode-python-ci/actions/check-python-versions@a81ceb5dc25ea56bd0c957ccda3a48886682faea
+        uses: microsoft/vscode-python-ci/actions/check-python-versions@c1aa1190277c85c93ab142e8909bcd11453ce30b
         with:
           files: |
             - path: .github/workflows/pr-check.yml