chore: remove obsolete version field in docker-compose.yml

[smola]

Avoid warnings:

❯ scripts/ddtest 
WARN[0000] /home/smola/dd/dd-trace-py/docker-compose.yml: the attribute `version` is obsolete, it will be ignored, please remove it to avoid potential confusion 
[+] Pulling 1/1
 ✔ testrunner Pulled                                                                                                    70.3s 
WARN[0000] /home/smola/dd/dd-trace-py/docker-compose.yml: the attribute `version` is obsolete, it will be ignored, please remove it to avoid potential confusion 
[+] Creating 1/1
[...]

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-compose.yml                                                      @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: 236 ± 3 ms.

The average import time from base is: 241 ± 4 ms.

The import time difference between this PR and base is: -4.8 ± 0.2 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 2.187 ms (0.93%)

ddtrace.bootstrap.sitecustomize 1.505 ms (0.64%)

ddtrace.bootstrap.preload 1.505 ms (0.64%)

ddtrace.internal.products 1.505 ms (0.64%)

ddtrace.internal.remoteconfig.client 0.690 ms (0.29%)

ddtrace 0.682 ms (0.29%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-04-21 16:16:47

Comparing candidate commit 78a7dc7 in PR branch smola/docker-compose-warning with baseline commit 550ecdf in branch main.

Found 0 performance improvements and 3 performance regressions! Performance is the same for 497 metrics, 8 unstable metrics.

scenario:iast_aspects-ljust_aspect

• 🟥 execution_time [+1.082µs; +1.320µs] or [+8.326%; +10.154%]

scenario:telemetryaddmetric-1-distribution-metric-1-times

• 🟥 execution_time [+353.426ns; +393.937ns] or [+11.951%; +13.321%]

scenario:telemetryaddmetric-flush-1-metric

• 🟥 execution_time [+319.687ns; +461.568ns] or [+7.505%; +10.835%]