* master: (35 commits)
[haskell-http-client] update samples (#4073)
[haskell-http-client] Bump deps to LTS 14.7 (#4068)
update release for 4.2.0
[typescript-axios] Fix api generating incorrect seralization type check (#4051)
prepare 4.1.3 release (#4052)
typescript-node: form data file (#3967)
Add a link to blog post on vertx and openapi (#4048)
better wording for apiNameSuffix option description (#4045)
[Ruby] fix ruby test, update error message (#4041)
[PHP] Correctly format JSON in headers (#4024)
[haskell-http-client] add dateTimeParseFormat cli option - overrides the format string used to parse a datetime (#4037)
Add frankyjuang to the C# technical committee (#4036)
Feature/api name suffix (#3918)
[F#] minor improvements to the generators (#3968)
Repaired Checkstyle (#4029)
mockito 3.1.0 (#4035)
typescript-fetch: fix return type of primitive value (#4028)
[typescript][node]: Add accept header if produces is not empty (#3966)
[haskell-http-client] disable unused import warning in Core.hs (#4020)
Add a link to the tutorial in http4k (#4019)
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PR checklist
Description of the PR
cc @OpenAPITools/generator-core-team