chore: downgrade k8s.io/apimachinery dependency from v0.32.2 to v0.31.4

[darccio]

What does this PR do?

Removes the indirect line setting k8s.io/apimachinery to v0.32.2, effectively ensuring the right version is used across all the impacted modules.

Motivation

go mod tidy didn't remove it although the root module doesn't use it directly.

Reviewer's Checklist

• Changed code has unit tests for its functionality at or near 100% coverage.
• System-Tests covering this feature have been added and enabled with the va.b.c-dev version tag.
• There is a benchmark for any new code, or changes to existing code.
• If this interacts with the agent in a new way, a system test has been added.
• Add an appropriate team label so this PR gets put in the right place for the release notes.
• Non-trivial go.mod changes, e.g. adding new modules, are reviewed by @DataDog/dd-trace-go-guild.
• For internal contributors, a matching PR should be created to the v2-dev branch and reviewed by @DataDog/apm-go.

Unsure? Have a question? Request a review!

[datadog-datadog-prod-us1]

Datadog Report

Branch report: dario.castane/remove-extra-k8s-dependency
Commit report: 45b10f7
Test service: dd-trace-go

✅ 0 Failed, 4480 Passed, 65 Skipped, 22m 41.69s Total Time

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-03-26 11:56:14

Comparing candidate commit 1385ebc in PR branch dario.castane/remove-extra-k8s-dependency with baseline commit 57473e2 in branch v2-dev.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 56 metrics, 0 unstable metrics.