PlanetMapper: A Python package for visualising, navigating and mapping Solar System observations

<!-- Release notes generated using configuration in .github/release.yml at main -->

What's Changed

Features & Bug Fixes

• Improve GUI appearance when loading, fix toolbar colour with dark mode, and standardise font sizes by @ortk95 in https://github.com/ortk95/planetmapper/pull/494
• Improve formatted DMS strings returned by utils.decimal_degrees_to_dms_str by @ortk95 in https://github.com/ortk95/planetmapper/pull/495
• Allow the lon/lat grid latitude limit to be customised in GUI by @ortk95 in https://github.com/ortk95/planetmapper/pull/497
• Replace utc2et with str2et when parsing date strings by @ortk95 in https://github.com/ortk95/planetmapper/pull/499
• Update version by @ortk95 in https://github.com/ortk95/planetmapper/pull/503

Dependencies

• Bump coverage from 7.9.1 to 7.10.1 by @dependabot[bot] in https://github.com/ortk95/planetmapper/pull/501
• Bump pyright from 1.1.402 to 1.1.403 by @dependabot[bot] in https://github.com/ortk95/planetmapper/pull/502
• Bump the package-requirements group with 3 updates by @dependabot[bot] in https://github.com/ortk95/planetmapper/pull/500

Full Changelog: https://github.com/ortk95/planetmapper/compare/v1.13.0...v1.13.1