CORE-14938 pin urllib3 version

[tyson-redpanda]

Backports Required

• none - not a bug fix
• none - this is a backport
• none - issue does not exist in previous branches
• none - papercut/not impactful enough to backport
• v25.3.x
• v25.2.x
• v25.1.x

Release Notes

Improvements

• Fixes a vulnerability in aioboto3 by pinning the urllib3 dependency.

[CLAassistant]

All committers have signed the CLA.

[tyson-redpanda]

/dt

[vbotbuildovich]

CI test results

test results on build#77593

test_class	test_method	test_arguments	test_kind	job_url	test_status	passed	reason	test_history
MountUnmountIcebergTest	test_simple_remount	{"cloud_storage_type": 1}	integration	https://buildkite.com/redpanda/redpanda/builds/77593#019b0444-391c-4106-8156-15deb657118c	FLAKY	8/11	Test PASSES after retries.No significant increase in flaky rate(baseline=0.2031, p0=0.6336, reject_threshold=0.0100. adj_baseline=0.4940, p1=0.0590, trust_threshold=0.5000)	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=MountUnmountIcebergTest&test_method=test_simple_remount

test results on build#77606

test_class	test_method	test_arguments	test_kind	job_url	test_status	passed	reason	test_history
PartitionReassignmentsTest	test_reassignments_cancel	null	integration	https://buildkite.com/redpanda/redpanda/builds/77606#019b050e-4805-4d6c-916d-674f72d9d865	FLAKY	8/11	Test PASSES after retries.No significant increase in flaky rate(baseline=0.1132, p0=0.3152, reject_threshold=0.0100. adj_baseline=0.3026, p1=0.3760, trust_threshold=0.5000)	https://redpanda.metabaseapp.com/dashboard/87-tests?tab=142-dt-individual-test-history&test_class=PartitionReassignmentsTest&test_method=test_reassignments_cancel

[vbotbuildovich]

/backport v25.3.x

[vbotbuildovich]

Failed to create a backport PR to v25.3.x branch. I tried:

git remote add upstream https://github.com/redpanda-data/redpanda.git
git fetch --all
git checkout -b backport-pr-28907-v25.3.x-160 remotes/upstream/v25.3.x
git cherry-pick -x 12e785fcaa 7f25903edb

Workflow run logs.