Fix disable decode for dump command on asyncio

[nosammai]

Pull Request check-list

Please make sure to review and check all of these items:

• Does $ tox pass with this change (including linting)?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?
• Was the change added to CHANGES file?

NOTE: these things are not required to open a PR and can be done
afterwards / while the PR is open.

Description of change

Fix typo in argument that causes the dump command to fail with an exception using the asyncio client.

[dvora-h]

@nosammai Nice catch, thanks for this! I just merge in the latest master to make sure all the tests pass and we can merge this PR.

[codecov-commenter]

Codecov Report

Merging #2070 (1d3d6f0) into master (876cafc) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #2070      +/-   ##
==========================================
- Coverage   91.23%   91.22%   -0.01%     
==========================================
  Files         100      100              
  Lines       21361    21361              
==========================================
- Hits        19489    19487       -2     
- Misses       1872     1874       +2     

Impacted Files	Coverage Δ
redis/asyncio/client.py	90.45% <0.00%> (-0.18%)	⬇️
redis/asyncio/connection.py	82.63% <0.00%> (-0.12%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 876cafc...1d3d6f0. Read the comment docs.