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

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Checklist:

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

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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

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

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