CI(trigger-e2e-tests): set e2e-platforms

[bayandin]

Problem

We don't want to run an excessive e2e test suite on neonvm if there are no relevant changes.

Summary of changes

• Check PR diff and if there are no relevant compute changes (in vendor/, pgxn/, or Dockerfile.compute-node
• Switch job from small to ubuntu-latest runner to make it possible to use GitHub CLI

Checklist before requesting a review

• ❗ revert DO NOT MERGE commits
• 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]

2730 tests run: 2589 passed, 0 failed, 141 skipped (full report)

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Flaky tests (1)

Postgres 16

• test_deletion_queue_recovery[no-validate-keep]: debug

Code coverage* (full report)

• functions: 28.2% (6306 of 22367 functions)
• lines: 47.0% (44286 of 94291 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
3e27131 at 2024-03-26T23:49:46.804Z :recycle:}