Java: Update local dev instructions to note jq dependency

[stkent]

When I try to run the journey test locally, it fails because I don't have jq installed.

My guess is that this used to be installed automatically, and that this is no longer true since the test restructuring (cc @Smarticles101 for verification).

We should update the CONTRIBUTING.md file in light of this change.

[Smarticles101]

afaik jq still needed to be installed before running the journey test before all the changes came.

[stkent]

Ah, I must have removed it inadvertently then! Still a worthy documentation add in that case :)

[mohanarpit]

Hey, I'm new to the world of contributing to OSS. Would you like me to make an edit to the CONTRIBUTING.md file to include the instructions that jq & ruby need to be installed for a local setup?

[FridaTveit]

Hi, thanks for wanting to contribute to open source! :)

Yes, it would be great if you could add something saying jq and ruby need to be installed for a complete local setup (in the complete local setup section of the CONTRIBUTING.md document) :) Does that make sense? Let me know if you have any more questions! :)