Slow down the epochs in tricky_masp_txs.

[murisi]

Describe your changes

The tricky_masp_txs integration test sometimes fails because the epoch transitions happen too quickly. This causes Transactions to be rejected because their asset types are outdated at their time of application. This PR slows down the epochs in tricky_masp_txs to make sure that this doesn't happen.

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies:
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 0.00%. Comparing base (c2cddf3) to head (99353cb).
Report is 15 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff      @@
##   main   #4631   +/-   ##
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