[E2E] PROMOTE TO BLOCKING: push_rules_spec.rb

What does this MR do?

Promotes the following e2e tests to the blocking bucket:

1. Create Push Rules using non signed commits restricts files by name and size | Testcase | Spec metrics

2. Create Push Rules using non signed commits allows an unrestricted push | Testcase | Spec metrics

3. Create Push Rules with commits restricted to verified emails rejects unverified emails | Testcase | Spec metrics

4. Create Push Rules using non signed commits restricts committing files with secrets | Testcase | Spec metrics

5. Create Push Rules using non signed commits restricts removal of tag | Testcase | Spec metrics

This MR was created based on data from reliable e2e test report: #461307 (closed)

(This MR was automatically generated by gitlab_quality-test_tooling at 2024-05-13 02:05:34 UTC)