ci: Pin GitHub Actions to specific commit SHAs

[ReenigneArcher]

Description

Updated msys2/setup-msys2, codecov/test-results-action, and codecov/codecov-action to use specific commit SHAs for improved security and reproducibility.

Screenshot

Issues Fixed or Closed

Roadmap Issues

Type of Change

• feat: New feature (non-breaking change which adds functionality)
• fix: Bug fix (non-breaking change which fixes an issue)
• docs: Documentation only changes
• style: Changes that do not affect the meaning of the code (white-space, formatting, missing semicolons, etc.)
• refactor: Code change that neither fixes a bug nor adds a feature
• perf: Code change that improves performance
• test: Adding missing tests or correcting existing tests
• build: Changes that affect the build system or external dependencies
• ci: Changes to CI configuration files and scripts
• chore: Other changes that don't modify src or test files
• revert: Reverts a previous commit
• BREAKING CHANGE: Introduces a breaking change (can be combined with any type above)

Checklist

• Code follows the style guidelines of this project
• Code has been self-reviewed
• Code has been commented, particularly in hard-to-understand areas
• Code docstring/documentation-blocks for new or existing methods/components have been added or updated
• Unit tests have been added or updated for any new or modified functionality

AI Usage

• None: No AI tools were used in creating this PR
• Light: AI provided minor assistance (formatting, simple suggestions)
• Moderate: AI helped with code generation or debugging specific parts
• Heavy: AI generated most or all of the code changes

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.01%. Comparing base (4caf0d0) to head (9d2d109).
⚠️ Report is 10 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #77   +/-   ##
=======================================
  Coverage   62.01%   62.01%           
=======================================
  Files           4        4           
  Lines         337      337           
  Branches       63       63           
=======================================
  Hits          209      209           
  Misses         92       92           
  Partials       36       36           

Flag	Coverage Δ
Linux	49.05% <ø> (ø)
Windows	56.70% <ø> (ø)
libappindicator3-dev	49.05% <ø> (ø)
libayatana-appindicator3-dev	49.05% <ø> (ø)
macOS	56.62% <ø> (ø)

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