feat: added node v20 support

[kirrg001]

• node-gyp 5.1.1 (which is installed by lerna) does no longer build with Node v20
• ESM & Node v20 support needs to wait, see ESM loader v20.3.0 access parent path nodejs/help#4190
  • we wait till the issue is resolved and then add ESM support
• we had to bump nan for gcstats, see nodejs/nan@865921e
• node-rdkafka (Node v20 Text file busy error Blizzard/node-rdkafka#1025)
• grpc no longer builds with Node v20
• sequilize does not work with Node v20, But their alpha release added support. Can update later

[kirrg001]

Node v20 worker threads: somehow we get false for the main thread inside the test env. Investigating

Running a CJS dummy app -> isMainThread is true
Running a ESM dummy app -> isMainThread is false

https://nodejs.org/en/blog/announcements/v20-release-announce

Custom ES module lifecycle hooks supplied via loaders (--experimental-loader=./foo.mjs) now run in a dedicated thread, isolated from the main thread. This provides a separate scope for loaders and ensures no cross-contamination between loaders and application code.