Issue #10: Fix Code Style check

Author: AksonovSergei

.github/workflows/pr-code-style-check.yml

@@ -17,6 +17,7 @@ jobs:
       - name: Find Modified C++ Files in PR
         id: changed-files
         run: |
+          git fetch origin ${{ github.base_ref }} --depth=1
           FILES=$(git diff --name-only origin/${{ github.base_ref }} -- '*.cpp' '*.h')
           if [[ -z "$FILES" ]]; then
             echo "✅ No modified C++ files in this PR."