show esplora too many requests issue

[zoedberg]

By enabling the sync call in the _get_wallet method, on the CI the mainnet_wlt_receiving_test test fails (when using esplora as indexer) receiving the following error:

thread 'mainnet_wlt_receiving_test_asset' panicked at tests/utils/helpers.rs:584:14:
called `Result::unwrap()` on an `Err` value: [Esplora(Ureq(Status(429, Response[status: 429, status_text: Too Many Requests, url: https://blockstream.info/api/scripthash/282e17a0c0fee5cd2a5fb4296018e43f54a39b21b62761de8f58b1c6c20b7291/txs]))), Esplora(Ureq(Status(429, Response[status: 429, status_text: Too Many Requests, url: https://blockstream.info/api/scripthash/d2353be27321358c3f7f4c5e38ef5f8da95b35f08e62612cf7edab3082172e9c/txs])))]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 37.22%. Comparing base (6d8e53b) to head (4719cfc).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master       #7      +/-   ##
==========================================
+ Coverage   37.17%   37.22%   +0.04%     
==========================================
  Files         279      279              
  Lines       42806    42806              
==========================================
+ Hits        15914    15933      +19     
+ Misses      26892    26873      -19     

Flag	Coverage Δ
rust	37.22% <ø> (+0.04%)	⬆️

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