Resolve NXCALS-4513 "Guava update to 29"

Merge request template

COMPATIBILITY NOTE

Please make sure that this change is BACKWARDS COMPATIBLE and a new server will work correctly with clients using old APIs versions.

It may be that data sent in the new format will break the old clients.

In case of any potential incompatibility we have to inform our clients and schedule release & deployment with them.

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@acc-logging-team - please have a look for approval.

Moving Guava to 29 on the client side. I had to fix the randomly failing test using TypeSafe config (now it is not accessed from the cache). I also moved the fix for Spark Server not starting fast to cover the dev envs as well.

Closes NXCALS-4513