td-agent v4 ships with Ruby 2.7 embedded and requires some updated dependencies (notably google-protobuf, which dropped support for Ruby < 2.5), so I'll cut a new minor release after this is merged (0.4.0) to match our semi-semver/matching td-agent version release convention.
td-agent v3 is EOL: https://www.fluentd.org/blog/schedule-for-td-agent-3-eol
td-agent v4 ships with Ruby 2.7 embedded and requires some updated dependencies (notably google-protobuf, which dropped support for Ruby < 2.5), so I'll cut a new minor release after this is merged (0.4.0) to match our semi-semver/matching td-agent version release convention.