[TRIVIAL] Bump codecov plugin version to version 4.5.0

[Bronek]

This version includes fix https://github.com/codecov/codecov-action/pull/1471 which should end the codecov upload errors due to throttling.

High Level Overview of Change

Bump codecov-action@v4.5.0

Context of Change

Upgrade to new version of codecov-action

Type of Change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Refactor (non-breaking change that only restructures code)
• [ ] Performance (increase or change in throughput and/or latency)
• [ ] Tests (you added tests for code that already exists, or your new feature included in this PR)
• [ ] Documentation update
• [x] Chore (no impact to binary, e.g. .gitignore, formatting, dropping support for older tooling)
• [ ] Release

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 71.3%. Comparing base (ef02893) to head (46f217f).

Additional details and impacted files

[](https://app.codecov.io/gh/XRPLF/rippled/pull/5055?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=XRPLF) ```diff @@ Coverage Diff @@ ## develop #5055 +/- ## ========================================= - Coverage 71.3% 71.3% -0.0% ========================================= Files 796 796 Lines 66987 66987 Branches 10892 10887 -5 ========================================= - Hits 47793 47791 -2 - Misses 19194 19196 +2 ``` [see 2 files with indirect coverage changes](https://app.codecov.io/gh/XRPLF/rippled/pull/5055/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=XRPLF) [](https://app.codecov.io/gh/XRPLF/rippled/pull/5055?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=XRPLF)