fix: fix podman issue on windows

[philasmar]

Description of changes:
Podman was not working on Windows. This PR fixes the command that checks if Podman is available.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov]

Codecov Report

Attention: Patch coverage is 64.70588% with 6 lines in your changes missing coverage. Please review.

Please upload report for BASE (feature/net8-upgrade@f9675d1). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
src/AWS.Deploy.Orchestration/Orchestrator.cs	50.00%	2 Missing and 3 partials ⚠️
....Deploy.Orchestration/SystemCapabilityEvaluator.cs	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@                   Coverage Diff                   @@
##             feature/net8-upgrade     #950   +/-   ##
=======================================================
  Coverage                        ?   62.10%           
=======================================================
  Files                           ?      294           
  Lines                           ?    10796           
  Branches                        ?     1616           
=======================================================
  Hits                            ?     6705           
  Misses                          ?     3490           
  Partials                        ?      601           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.