feat(medusa-react,medusa,utils): add users/me endpoint + add missing specs (#6441)

**what:**

- adds /me endpoint
- adds fixes to routes
- adds specs for auth endpoint
- updates dotenv package versions


Co-authored-by: Philip Korsholm <88927411+pKorsholm@users.noreply.github.com>

.changeset/perfect-geckos-hunt.md

@@ -0,0 +1,7 @@
+---
+"medusa-react": patch
+"@medusajs/medusa": patch
+"@medusajs/utils": patch
+---
+
+feat(medusa-react,medusa,utils): fix login for medusa v2 admin next dashboard