chore: bump etcd-adapter to latest

[fengxsong]

Type of change:

• [x] Bugfix
• [ ] New feature provided
• [ ] Improve performance
• [ ] Backport patches
• [ ] Documentation
• [ ] Refactor
• [x] Chore
• [ ] CI/CD or Tests

What this PR does / why we need it:

bump deps to latest

• etcd-adapter fix issue https://github.com/api7/etcd-adapter/pull/31

Pre-submission checklist:

• [x] Did you explain what problem does this PR solve? Or what new features have been added?
• [ ] Have you added corresponding test cases?
• [ ] Have you modified the corresponding document?
• [x] Is this PR backward compatible? If it is not backward compatible, please discuss on the mailing list first

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (e6e5872) 37.38% compared to head (9ab6512) 37.38%. Report is 1 commits behind head on master.

:exclamation: Current head 9ab6512 differs from pull request most recent head f0739dd. Consider uploading reports for the commit f0739dd to get more accurate results

Files	Patch %	Lines
pkg/apisix/cluster.go	0.00%	1 Missing :warning:

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2154   +/-   ##
=======================================
  Coverage   37.38%   37.38%           
=======================================
  Files          94       94           
  Lines        7971     7971           
=======================================
  Hits         2980     2980           
  Misses       4597     4597           
  Partials      394      394           

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[github-actions[bot]]

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[Revolyssup]

done