feat(compute): Automatically create release PRs

[ololobus]

We've finally transitioned to using a separate release-compute branch. Now, we can finally automatically create release PRs on Fri and release them during the following week.

Part of neondatabase/cloud#11698

[a-masterov]

looks good to me

[ololobus]

Hm, there are repeating errors

+ gh workflow --repo neondatabase/cloud run cancel-previous-in-concurrency-group.yml --field concurrency_group=neondatabase/neon-e2e-tests-10495/merge-anysha
unable to determine default branch for neondatabase/cloud: HTTP 401: Bad credentials (https://api.github.com/graphql)
Try authenticating with:  gh auth login

Probably something is wrong with GH

[github-actions]

7381 tests run: 6996 passed, 0 failed, 385 skipped (full report)

---

Flaky tests (5)

Postgres 17

• test_metrics_normal_work: release-x86-64-without-lfc

Postgres 15

• test_metrics_normal_work: release-arm64-with-lfc

Postgres 14

• test_location_conf_churn[3]: release-arm64-with-lfc
• test_metrics_normal_work: release-x86-64-with-lfc, release-arm64-with-lfc

Code coverage* (full report)

• functions: 33.5% (8497 of 25342 functions)
• lines: 49.3% (71394 of 144774 lines)

* collected from Rust tests only

---

_{The comment gets automatically updated with the latest test results
9f66636 at 2025-01-23T18:57:21.559Z :recycle:}