workflows: fix release process

[edsiper]

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Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.

Summary by CodeRabbit

• Build & Infrastructure Improvements
  • Improved Windows build reliability with automatic retry and more robust installer handling.
  • Streamlined installer invocation and cleanup for faster, more reliable builds.
  • Switched release artifact sync to a controlled repository script and made uploads safer so package metadata appears only after content is synced, reducing incomplete-release risk.