v1.1.6: Fix encoding for Prime API sign. Bump axios dependency.

What's Changed

• [Snyk] Security upgrade axios from 1.10.0 to 1.12.0 by @tiagosiebler in #98
• fix: bump axios to fix build by @tiagosiebler in #100
• fix(v1.1.6, #102): switch prime sign secret encoding to utf by @tiagosiebler in #103

Full Changelog: v1.1.5...v1.1.6