Pin python in ci integration tests to prevent intermitent codspeed segfaults in walltime

[GuillaumeLagrange]

All observed crashes occured with 3.14.3, although it did not crash all the time.
Pin for now to unblock other PRs, and investigate later

[codspeed-hq]

Merging this PR will degrade performance by 18.32%

⚡ 10 improved benchmarks
❌ 14 (👁 14) regressed benchmarks
✅ 143 untouched benchmarks

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	WallTime	test_fs_read[1000]	857.1 ns	795.3 ns	+7.77%
👁	WallTime	test_threadpool_map[10]	2.5 ms	2.6 ms	-2.06%
⚡	WallTime	test_multiprocessing_map[10000]	101.3 ms	82.1 ms	+23.32%
👁	WallTime	test_tcp_connection[google.com-443]	1.1 ms	1.2 ms	-2.44%
⚡	WallTime	test_iir_filter_process	3.2 µs	3.1 µs	+3.09%
👁	WallTime	test_multiprocessing_map[1000]	57 ms	69.8 ms	-18.32%
👁	WallTime	test_noop_lambda_decorated	1.3 µs	1.4 µs	-8.62%
👁	WallTime	test_recursive_fibo_20	5.5 ms	5.8 ms	-5.28%
👁	WallTime	test_combination_sum[candidates0-8]	11.8 µs	12.1 µs	-2.71%
👁	WallTime	test_open_knight_tour[1]	4 µs	4.1 µs	-2.94%
👁	WallTime	test_tcp_connection[1.1.1.1-53]	834.6 µs	1,001.5 µs	-16.67%
⚡	WallTime	test_multiprocessing_map[100]	54.2 ms	53.1 ms	+2.01%
👁	WallTime	test_noop_pass	483.4 ns	506.5 ns	-4.56%
👁	WallTime	test_make_highshelf	7.7 µs	7.9 µs	-2.58%
👁	WallTime	test_make_bandpass	5.9 µs	6.1 µs	-3.54%
⚡	WallTime	test_array_alloc[100]	1.2 µs	1.1 µs	+7.91%
⚡	WallTime	test_sum_of_squares[sum_of_squares_sum_comprehension_power]	227.1 µs	218.2 µs	+4.09%
⚡	WallTime	test_noop_pass_decorated	748 ns	729 ns	+2.61%
⚡	WallTime	test_make_highpass	5.9 µs	5.8 µs	+2.67%
👁	WallTime	test_multiprocessing_map[100000]	192.2 ms	231.8 ms	-17.08%
...	...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

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_{Comparing cod-2199-pytest-codspeed-segfaults-in-walltime (c3a194a) with master (adee8a1)}

[edgarrmondragon]

FWIW Python 3.13.12 is similarly affected:

• ci: Bump Python to 3.13.12 in CodSpeed workflow meltano/meltano#9812

Works well with 3.13.11, so I pinned to the patch version and opened that PR to confirm. Should I create an issue?

[GuillaumeLagrange]

@edgarrmondragon Thank you very much for the report, I have created the issue where we'll clarify. Please let us know if you find other versions that are affected