Revert removal of getPullRequests

[bitwiseman]

Description

Method was not marked as deprecated, but was removed. Adding it back to prevent breaks.

Fixes #1957

Before submitting a PR:

• Changes must not break binary backwards compatibility. If you are unclear on how to make the change you think is needed while maintaining backward compatibility, CONTRIBUTING.md for details.
• Add JavaDocs and other comments explaining the behavior.
• When adding or updating methods that fetch entities, add @link JavaDoc entries to the relevant documentation on https://docs.github.com/en/rest .
• Add tests that cover any added or changed code. This generally requires capturing snapshot test data. See CONTRIBUTING.md for details.
• Run mvn -D enable-ci clean install site locally. If this command doesn't succeed, your change will not pass CI.
• Push your changes to a branch other than main. You will create your PR from that branch.

When creating a PR:

• Fill in the "Description" above with clear summary of the changes. This includes:
  • If this PR fixes one or more issues, include "Fixes #" lines for each issue.
  • Provide links to relevant documentation on https://docs.github.com/en/rest where possible. If not including links, explain why not.
• All lines of new code should be covered by tests as reported by code coverage. Any lines that are not covered must have PR comments explaining why they cannot be covered. For example, "Reaching this particular exception is hard and is not a particular common scenario."
• Enable "Allow edits from maintainers".

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.69%. Comparing base (04af6e3) to head (57156ce).
Report is 12 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@ ## main #2049 +/- ## ============================================ + Coverage 83.58% 83.69% +0.10%  - Complexity 2380 2395 +15  ============================================ Files 235 235 Lines 7262 7279 +17 Branches 382 386 +4 ============================================ + Hits 6070 6092 +22  + Misses 956 954 -2  + Partials 236 233 -3 

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