Retry Markdown link checks on HTTP 429.

[matthewdale]

Summary

Retry Markdown link checks when the endpoint responds with HTTP 429.

Background & Motivation

The http://reneefrench.blogspot.com/ site returns HTTP 429 frequently, leading to failed pre-commit checks when run in the Github Actions runners. The markdown-link-check tool supports retrying after an HTTP 429, automatically waiting until the time specified by the "retry-after" HTTP header. See the usage docs for details.

[mongodb-drivers-pr-bot]

🧪 Performance Results

Commit SHA: 58e700a

The following benchmark tests for version 68b1d98d76cdc90007376ad7 had statistically significant changes (i.e., |z-score| > 1.96):

Benchmark	Measurement	% Change	Patch Value	Stable Region	H-Score	Z-Score
BenchmarkSingleRunCommand	ops_per_second_min	32.7993	1921.9903	Avg: 1447.2894 Med: 1458.7797 Stdev: 171.8112	0.8047	2.7629
BenchmarkBSONDeepDocumentDecoding	ops_per_second_min	15.3054	2283.2406	Avg: 1980.1684 Med: 1988.0834 Stdev: 121.8239	0.7766	2.4878
BenchmarkSmallDocInsertOne	total_time_seconds	-5.0704	1.1240	Avg: 1.1840 Med: 1.1850 Stdev: 0.0219	0.8008	-2.7460
BenchmarkSingleFindOneByID	ops_per_second_max	3.7061	4620.0687	Avg: 4454.9644 Med: 4451.5075 Stdev: 79.5812	0.7585	2.0747
BenchmarkBSONDeepDocumentDecoding	total_time_seconds	1.4991	1.2172	Avg: 1.1992 Med: 1.1989 Stdev: 0.0058	0.8429	3.0836
BenchmarkBSONFullDocumentEncoding	allocated_bytes_per_op	0.0886	5207.0000	Avg: 5202.3895 Med: 5202.0000 Stdev: 2.0384	0.7601	2.2618

For a comprehensive view of all microbenchmark results for this PR's commit, please check out the Evergreen perf task for this patch.

[mongodb-drivers-pr-bot]

API Change Report

No changes found!

[Copilot]

Pull Request Overview

This PR adds retry functionality to the markdown link checker to handle HTTP 429 "Too Many Requests" responses, specifically addressing frequent failures from http://reneefrench.blogspot.com/ during pre-commit checks in GitHub Actions.

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