docs(changelog): update for v2.1.5

Author: github-actions[bot]

CHANGELOG.md

@@ -1,3 +1,20 @@
+## v2.1.5 - 2026-03-04
+
+## What's Changed
+
+* feat: complete translations for all languages (100% coverage) (#360) @Mateeb-Haider
+* readme update and lint (#419) @vedansh-5
+* Resolve snap bug (#418) @vedansh-5
+* Fix typos in Scrum Helper user-facing strings (#410) @puneetnith28
+
+## Maintenance
+
+* chore(deps)(deps-dev): bump @biomejs/biome from 2.4.4 to 2.4.5 (#416) @[dependabot[bot]](https://github.com/apps/dependabot)
+* chore(deps)(deps): bump @tailwindcss/cli from 4.1.18 to 4.2.1 (#395) @[dependabot[bot]](https://github.com/apps/dependabot)
+* version bump to 2.1.4 (#408) @vedansh-5
+
+---
+
 ## v2.1.5 - 2026-03-02
 
 ## What's Changed