chore: add setup version gates

[P403n1x87]

Description

We add version gates to the setup script to prevent parts that cannot be compiled with a new version of CPython to compile. This allows the build process to succeed while the various native components introduce support for the new version.

[cit-pr-commenter-54b7da]

Codeowners resolved as

setup.py                                                                @DataDog/python-guild

[pr-commenter]

Benchmarks

Benchmark execution time: 2026-05-08 11:17:02

Comparing candidate commit 9bec4df in PR branch chore/setup-version-gates with baseline commit d1a7113 in branch main.

Found 0 performance improvements and 5 performance regressions! Performance is the same for 591 metrics, 4 unstable metrics.

scenario:iast_aspects-re_expand_aspect

• 🟥 execution_time [+255.243µs; +299.403µs] or [+7.332%; +8.601%]

scenario:iastaspects-lower_noaspect

• 🟥 execution_time [+19.139µs; +23.896µs] or [+8.192%; +10.228%]

scenario:iastaspectsospath-ospathbasename_aspect

• 🟥 execution_time [+91.883µs; +101.458µs] or [+21.600%; +23.850%]

scenario:span-start

• 🟥 execution_time [+1.190ms; +1.368ms] or [+7.620%; +8.761%]

scenario:telemetryaddmetric-1-count-metric-1-times

• 🟥 execution_time [+213.100ns; +248.238ns] or [+10.276%; +11.971%]

[vlad-scherbich]

LGTM, but are those failing tests related?

[chatgpt-codex-connector]

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