Add bytestring package to dependencies of generated haskell code

[bholst]

This broke in #18047 where tvh introduced an import of Data.ByteString.Lazy. The added bytestring package was available in some but not all cases.

I tested the generation of our own openapi package and compiled it successfully.

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[wing328]

thanks for the PR

cc @tvh (author of #18047)

[wing328]

I tested the generation of our own openapi package and compiled it successfully.

can you please share a minimal test spec to reproduce the issue?

[wing328]

I've filed #19101 and added a test with ping.yaml (which doesn't have any security settings/schemes)

[wing328]

closing this one as we've merged #19101 in which you and I are listed as co-authors