GH-45305: [CI][Python] Temporarily avoid newer boto3 version

[pitrou]

Until Minio gets fixed.

Rationale for this change

What changes are included in this PR?

Are these changes tested?

Are there any user-facing changes?

• GitHub Issue: [Python] Compatibility with boto 1.36 #45305

[pitrou]

@github-actions crossbow submit -g python

[github-actions]

⚠️ GitHub issue #45305 has been automatically assigned in GitHub to PR creator.

[github-actions]

Revision: 6671e83

Submitted crossbow builds: ursacomputing/crossbow @ actions-3dcdd8e768

Task	Status
example-python-minimal-build-fedora-conda
example-python-minimal-build-ubuntu-venv
test-conda-python-3.10
test-conda-python-3.10-hdfs-2.9.2
test-conda-python-3.10-hdfs-3.2.1
test-conda-python-3.10-pandas-latest-numpy-latest
test-conda-python-3.10-substrait
test-conda-python-3.11
test-conda-python-3.11-dask-latest
test-conda-python-3.11-dask-upstream_devel
test-conda-python-3.11-hypothesis
test-conda-python-3.11-pandas-latest-numpy-1.26
test-conda-python-3.11-pandas-latest-numpy-latest
test-conda-python-3.11-pandas-nightly-numpy-nightly
test-conda-python-3.11-pandas-upstream_devel-numpy-nightly
test-conda-python-3.11-spark-master
test-conda-python-3.12
test-conda-python-3.12-cpython-debug
test-conda-python-3.13
test-conda-python-3.9
test-conda-python-3.9-pandas-1.1.3-numpy-1.19.5
test-conda-python-emscripten
test-cuda-python-ubuntu-22.04-cuda-11.7.1
test-debian-12-python-3-amd64
test-debian-12-python-3-i386
test-fedora-39-python-3
test-ubuntu-22.04-python-3
test-ubuntu-22.04-python-313-freethreading
test-ubuntu-24.04-python-3

[pitrou]

@h-vetinari @raulcd I'd like to merge this quickly if it fixes the CI failures

[raulcd]

Thanks @pitrou , 👍

[pitrou]

The remaining CI failures (Substrait, Hypothesis, Emscripten) are unrelated.

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit a74eb7e.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details. It also includes information about 10 possible false positives for unstable benchmarks that are known to sometimes produce them.