v1.8.7

What's Changed since v1.8.6

• 📦️ Wrap containerized ba-timeseries-gradients by @shnizzedy in #59
• ✅ Restore Apptainer tests by @shnizzedy in #70
• ✨ Add gradients and tsconcat commands to cpac by @shnizzedy in #47
• 🐛 Fix cpac --platform singularity run without instance not found error by @shnizzedy in #71

Full Changelog: v1.8.6...v1.8.7