CI(release): tune Storage & Compute release PR title

[bayandin]

Problem

A title for automatic proxy release PRs is Proxy release, and for storage & compute it's just Release

Summary of changes

• Amend PR title for Storage & Compute releases to "Storage & Compute release"

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]

3114 tests run: 2987 passed, 0 failed, 127 skipped (full report)

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Flaky tests (1)

Postgres 15

• test_vm_bit_clear_on_heap_lock: debug

Code coverage* (full report)

• functions: 31.4% (6445 of 20541 functions)
• lines: 48.3% (49845 of 103239 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
db7a3f8 at 2024-05-23T22:29:03.144Z :recycle:}