chore(ci): skip non-linux OCI package creation [backport 2.19]

[github-actions]

Backport af9098c from #12036 to 2.19.

The shared pipeline is introducing support for windows OCI packages. This PR ensure dd-trace-py doesn't generate nonsensical packages. Windows support can be added later.

This was tested by using the WIP branch of one-pipeline

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-01-30 11:19:48

Comparing candidate commit 1dbea33 in PR branch backport-12036-to-2.19 with baseline commit aa1fbaa in branch 2.19.

Found 0 performance improvements and 2 performance regressions! Performance is the same for 392 metrics, 2 unstable metrics.

scenario:iast_aspects-translate_aspect

• 🟥 execution_time [+271.317ns; +322.056ns] or [+7.023%; +8.337%]

scenario:iast_aspects-upper_aspect

• 🟥 execution_time [+200.836ns; +242.132ns] or [+7.450%; +8.981%]