Fix kafka auth (#16351)

[FloatingCrowbar]

Changelog entry

Buxfix for auth in kafka proxy

Changelog category

• Bugfix

Description for reviewers

#16351

[github-actions]

⚪ 2025-03-28 11:05:39 UTC Pre-commit check for ab7784d has started.
⚪ 2025-03-28 11:08:14 UTC Build linux-x86_64-relwithdebinfo is running...
🟢 2025-03-28 11:46:23 UTC Build successful.
⚪ 2025-03-28 11:46:38 UTC Tests are running...
🔴 2025-03-28 13:14:09 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
14425	13058	0	21	1300	46

🟢 2025-03-28 13:15:10 UTC ydbd size 8.3 GiB changed* by -1.9 KiB, which is <= 0 Bytes vs stable-24-4: OK

ydbd size dash	stable-24-4: 5097f8b	merge: ab7784d	diff	diff %
ydbd size	8 898 204 288 Bytes	8 898 202 336 Bytes	-1.9 KiB	-0.000%
ydbd stripped size	485 015 720 Bytes	485 015 656 Bytes	-64 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2025-03-28 11:05:40 UTC Pre-commit check for ab7784d has started.
⚪ 2025-03-28 11:08:21 UTC Build linux-x86_64-release-asan is running...
🟢 2025-03-28 11:29:29 UTC Build successful.
⚪ 2025-03-28 11:29:47 UTC Tests are running...
🔴 2025-03-28 13:38:17 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10169	10068	0	30	29	42

🟢 2025-03-28 13:38:58 UTC ydbd size 5.6 GiB changed* by +560 Bytes, which is < 100.0 KiB vs stable-24-4: OK

ydbd size dash	stable-24-4: 5097f8b	merge: ab7784d	diff	diff %
ydbd size	6 027 598 296 Bytes	6 027 598 856 Bytes	+560 Bytes	+0.000%
ydbd stripped size	1 508 433 376 Bytes	1 508 433 312 Bytes	-64 Bytes	-0.000%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}