Update http4s-blaze-client, ... to 0.21.0-M6

[scala-steward]

Updates

• org.http4s:http4s-blaze-client
• org.http4s:http4s-blaze-server
• org.http4s:http4s-circe
• org.http4s:http4s-dsl

from 0.21.0-M5 to 0.21.0-M6.
Release Notes/Changelog

I'll automatically update this PR to resolve conflicts as long as you don't change it yourself.

If you'd like to skip this version, you can just close this PR. If you have any feedback, just mention me in the comments below.

Have a fantastic day writing Scala!

Ignore future updates

Add this to your .scala-steward.conf file to ignore future updates of this dependency:

updates.ignore = [ { groupId = "org.http4s" } ]

labels: semver-pre-release

[codecov]

Codecov Report

Merging #705 into master will decrease coverage by 0.34%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #705      +/-   ##
==========================================
- Coverage   81.63%   81.29%   -0.35%     
==========================================
  Files          73       73              
  Lines        1160     1160              
  Branches       15       15              
==========================================
- Hits          947      943       -4     
- Misses        213      217       +4

Impacted Files	Coverage Δ
...kindness/mu/rpc/idlgen/avro/AvroSrcGenerator.scala	70% <0%> (-6.67%)	⬇️

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