Update of dependency required to build on Apple Mac M1

[lionel-nj]

Summary:

I tried to build the gtfs-realtime-validator but could not.

Steps to reproduce:

Execute mvn package at the root of the project in a Terminal session.

Expected behavior:

Generate an executable jar in target.

Observed behavior:

Build failure as illustrated on the screenshot below ⬇️

Thanks @barbeau for helping to fix this: bumping com.github.eirslett to 1.11.0+ in pom.xml fixes that bug.

eirslett/frontend-maven-plugin#952 (comment)

Platform:
Mac M1
MacOS Big Sur 11.6 version
Java 11.0.11