chore: update dockertest to v3.6.3

[oss92]

Which problem is this PR solving?

Dockertest v3.3.5 ceased to work on MacOS ory/dockertest#212

Short description of the changes

Updated Dcokertest to the v3 package at version 3.6.3 to overcome the tool no longer working on darwin systems.

[codecov]

Codecov Report

Merging #344 (7686865) into master (8d8e660) will increase coverage by 0.05%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #344      +/-   ##
==========================================
+ Coverage   74.25%   74.30%   +0.05%     
==========================================
  Files          65       65              
  Lines        3678     3678              
==========================================
+ Hits         2731     2733       +2     
+ Misses        841      839       -2     
  Partials      106      106              

Impacted Files	Coverage Δ
component/http/middleware.go	85.50% <0.00%> (ø)
test/docker/docker.go	68.00% <ø> (ø)
component/async/kafka/simple/duration_client.go	96.36% <0.00%> (+3.63%)	⬆️

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[tpaschalis]

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