Revert "chore(neon_test_utils): restrict installation to superuser"

[skyzh]

This reverts commit 1173ee6.

Problem

It breaks autoscaling tests

Summary of changes

Checklist before requesting a review

• I have performed a self-review of my code.
• If it is a core feature, I have added thorough tests.
• Do we need to implement analytics? if so did you add the relevant metrics to the dashboard?
• If this PR requires public announcement, mark it with /release-notes label and add several sentences in this section.

Checklist before merging

• Do not forget to reformat commit message to not include the above checklist

[github-actions]

3024 tests run: 2891 passed, 0 failed, 133 skipped (full report)

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Code coverage* (full report)

• functions: 31.4% (6321 of 20132 functions)
• lines: 47.3% (47632 of 100707 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
70fe257 at 2024-05-09T15:23:15.603Z :recycle:}