carto/protobuf @ ruby-2.6-docker-image

Bo Yang ed78083039 Update raker compiler docker image for ruby2.6		%!s(int64=7) %!d(string=hai) anos
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linux	ed78083039 Update raker compiler docker image for ruby2.6	%!s(int64=7) %!d(string=hai) anos
macos	7dcf8fa8ba Ruby build fix mac 3.7.x (#5519)	%!s(int64=7) %!d(string=hai) anos