Bump esplora-client to 0.11

[tnull]

Bump esplora-client to 0.11
.. the most-recent release, which also dropped the async-std dependency in favor of a default sleeper implementation using tokio.

This is needed for compatibility with upcoming BDK versions.

[vincenzopalazzo]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.55%. Comparing base (d49a08a) to head (4d9bcf1).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3348      +/-   ##
==========================================
- Coverage   89.59%   89.55%   -0.04%     
==========================================
  Files         127      127              
  Lines      103438   103438              
  Branches   103438   103438              
==========================================
- Hits        92672    92631      -41     
- Misses       8049     8082      +33     
- Partials     2717     2725       +8     

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[tnull]

Might want to hold off until they fixed bitcoindevkit/rust-esplora-client#102

[tnull]

Should be good for review, now that they shipped esplora-client 0.11 which replaces the async-std dependency with a trait implementation defaulting to tokio at least, which users of this very likely already use to drive the async version.