ci: update one pipeline reference [backport 2.21]

[brettlangdon]

Backport #13750 to 2.21

Checklist

• [x] 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

• [x] 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

[github-actions[bot]]

CODEOWNERS have been resolved as:

.github/workflows/system-tests.yml                                      @DataDog/python-guild @DataDog/apm-core-python
.gitlab-ci.yml                                                          @DataDog/apm-core-python
.gitlab/one-pipeline.locked.yml                                         @DataDog/python-guild @DataDog/apm-core-python

[pr-commenter[bot]]

Benchmarks

Benchmark execution time: 2025-07-01 19:45:45

Comparing candidate commit f75b60d2e88e116af48682f6876f79db6ef2bbb7 in PR branch backport-13750-to-3.9 with baseline commit 7990c0324cccee5fbd84273dbb892c646c3e78b1 in branch 2.21.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 328 metrics, 2 unstable metrics.