fix(scripts): rename CHAIN-ID on sei.env

[nseguias]

Description and Motivation

This PR changes the CHAIN-ID on the sei.env file as it was incorrect.

Related Issues

---

Checklist:

• I have read Migaloo's contribution guidelines.
• My pull request has a sound title and description (not something vague like Update index.md)
• All existing and new tests are passing.
• I updated/added relevant documentation.
• The code is formatted properly cargo fmt --all --.
• Clippy doesn't report any issues cargo clippy -- -D warnings.
• I have regenerated the schemas if needed cargo schema.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7676a96) 94.46% compared to head (204d372) 94.46%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #279   +/-   ##
=======================================
  Coverage   94.46%   94.46%           
=======================================
  Files         219      219           
  Lines       24858    24858           
=======================================
  Hits        23482    23482           
  Misses       1376     1376           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.