chore(ci): no rust workflows for markdown-only changes

[LesnyRumcajs]

Summary of changes

Changes introduced in this pull request:

• don't run expensive checks when only modifying markdown files in the repo

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code adheres to the team's documentation standards,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.

Summary by CodeRabbit

• Chores
  • Updated continuous integration workflows to skip triggering on Markdown file changes, streamlining the CI/CD pipeline and reducing unnecessary workflow runs when only documentation is modified.

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[coderabbitai]

Walkthrough

This pull request adds "**/*.md" path-ignore entries to five GitHub workflow files (coverage, docker, forest, rust-lint, and unit-tests) to prevent CI workflows from triggering when only Markdown files are modified.

Changes

Cohort / File(s)	Summary
CI workflow Markdown ignores .github/workflows/coverage.yml, .github/workflows/docker.yml, .github/workflows/forest.yml, .github/workflows/rust-lint.yml, .github/workflows/unit-tests.yml	Added "**/*.md" path-ignore pattern to both pull_request and push triggers in each workflow, preventing runs triggered by Markdown-only changes

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• chore: resurrect codecov reports #6324: Adds the same "**/*.md" path-ignore entries to multiple GitHub workflow files, directly overlapping with these changes.

Suggested reviewers

• akaladarshi
• hanabi1224

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: skipping Rust CI workflows when only Markdown files are modified, which directly aligns with all file changes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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