ci(testrunner): add dd-octo-sts and gh cli tools to testrunner image

[brettlangdon]

Needed for #13948 so we can migrate test-gen job to dd-octo-sts.

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

[github-actions]

CODEOWNERS have been resolved as:

docker/Dockerfile                                                       @DataDog/apm-core-python

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 279 ± 3 ms.

The average import time from base is: 280 ± 2 ms.

The import time difference between this PR and base is: -1.6 ± 0.1 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 1.923 ms (0.69%)

ddtrace.bootstrap.sitecustomize 1.250 ms (0.45%)

ddtrace.bootstrap.preload 1.250 ms (0.45%)

ddtrace.internal.remoteconfig.client 0.633 ms (0.23%)

ddtrace 0.673 ms (0.24%)

ddtrace.internal._unpatched 0.030 ms (0.01%)

json 0.030 ms (0.01%)

json.decoder 0.030 ms (0.01%)

re 0.030 ms (0.01%)

enum 0.030 ms (0.01%)

types 0.030 ms (0.01%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-07-11 18:49:17

Comparing candidate commit 3afec28 in PR branch LANGPLAT-661/update.dockerfile with baseline commit c7c99b3 in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 460 metrics, 2 unstable metrics.

[brettlangdon]

I am not sure this is going to work, since it requires grabbing an artifact from an internal repo... and we build this image in GitHub Actions 🤔