v0.6.9

MathTeXEngine v0.6.9

Diff since v0.6.8

• Improve TeX spacing and bounds

Merged pull requests:

• Bump julia-actions/setup-julia from 2 to 3 (#161) (@dependabot[bot])
• Bump codecov/codecov-action from 5 to 6 (#162) (@dependabot[bot])
• Bump julia-actions/cache from 2 to 3 (#163) (@dependabot[bot])
• Bump actions/upload-artifact from 6 to 7 (#164) (@dependabot[bot])
• Improve TeX spacing and bounds (#165) (@AshtonSBradley)