fix(openssl): use kong openssl lib to build lua dev dependencies

[fffonion]

Currently Kong's docker image on master is based on ubuntu 22.04, which has moved to openssl 3.0, causing
inconsistency with the openssl Kong ships (1.1.1 series).

[Tieske]

from the test failures it seems that openssl is still required for other dependencies

meant to ask for changes :)

[Tieske]

some suggestions, and we need the tests to pass.

[Tieske]

looks like the tests fails on python missing out openssl

[fffonion]

all tests passed 🎉 !

[fffonion]

Thank you @Tieske for reviewing and merging this! I will work on the pongo PR on kong-ee side now.
Regarding the paths for openssl, it occurs to me that it might make sense to just provide a correct pkgconfig file
in the official docker image, so we don't even need to pass along env var/args. I will adjust that in later PRs, internal
ticket is KAG-833.

[Tieske]

I don't think luarocks uses pkgconfig, so that would not help (except for the pip dependency maybe).

@hisham you probably know; see the changes in this PR. We're setting up some env vars to ensure we can build rocks with the proper version of openssl (the one shipped with Kong). If we add the info, as suggested by @fffonion in pkgconfig, would Luarocks then automatically pick that up?