chore: bump up client-rs to v0.2.26

[chlins]

This pull request updates the client-rs submodule to a newer commit. The change points the submodule to commit a15d556f959ff75c302608c6297f654fcb546f30, replacing the previous commit 2a0ef8ec19fe09400fba32a33b8cc0f6879d8da6.

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[Liam-Zhao]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 34.27%. Comparing base (f45351f) to head (c0ee440).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4022      +/-   ##
==========================================
- Coverage   34.27%   34.27%   -0.01%     
==========================================
  Files         343      343              
  Lines       40199    40199              
==========================================
- Hits        13778    13777       -1     
+ Misses      25513    25512       -1     
- Partials      908      910       +2     

Flag	Coverage Δ
unittests	34.27% <ø> (-0.01%)	⬇️

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see 2 files with indirect coverage changes

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