Fix reported security vulnerabilities reported

[lucassaldanha]

• Update dependencies
• Validate results on Sonarcube
• Includes update to Vertx 4

[usmansaleem]

https://docs.sonarqube.org/latest/analysis/scan/sonarscanner-for-gradle/

[macfarla]

This one can be ignored for now: Protobuf has a recent vulnerability CVE-2021-22569 released on 10 Jan so CPE is not provided yet
Also the netty-handler one can be considered as LOW (sonartype bugs after exploitation)

[usmansaleem]

Fixed by #419

[lucassaldanha]

After a new scan, there were still a few violations that we want to deal with.

[macfarla]

See #432 and #433
This should solve jnr-posix and will bring protobuf to 3.19 in line with besu.
gson dependency comes from tuweni 2.0.0 via besu 21.10.9 hence this can be solved by updating to besu 22.1.0 when this is released.
guava - there is no update for this as yet. https://mvnrepository.com/artifact/com.google.guava/guava
grpc-core and netty are in line with besu 21.10.9

[lucassaldanha]

We are waiting for Besu 22.1.0 release to finalise this work in Ethsigner.

[macfarla]

Besu 22.1.0 and EthSigner 22.1.0 have been released