chore: bump interchaintest to v7

[spoo-bar]

• bumping interchaintest framework to v7
• relevant code changes
• using gaia v14.1.0 (the latest tagged version) instead of latest as the latest seems to be broken

[codecov[bot]]

Codecov Report

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

Comparison is base (7ffb587) 0.00% compared to head (b62110b) 64.62%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #541 +/- ## ========================================= + Coverage 0 64.62% +64.62% ========================================= Files 0 88 +88 Lines 0 4851 +4851 ========================================= + Hits 0 3135 +3135 - Misses 0 1550 +1550 - Partials 0 166 +166 ```

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