Bump coursier to v2.1.0-RC2

[jin]

Also mirrored to https://mirror.bazel.build/coursier_cli/coursier_cli_v2.1.0-RC2.jar

[shs96c]

LGTM, though it's interesting that the lock files have changed.

[jin]

I downloaded zookeeper-3.4.13 and verified that the new lock files reflects the deps in its pom file. Given that there's nothing stopping Maven owners from changing POM files for released artifacts, it'd explain changed lock files like these.

[cheister]

LGTM, thanks for the update

[alexarchambault]

@jin Does the lock file contain the result of a resolution done by coursier? What are its input dependencies?

The changes are likely to be explained by changes in coursier itself, rather than POM changes on Maven Central (that are very uncommon AFAIK). I'd be interested in investigating whether these are legit or not, before cutting coursier 2.1.0 final.

[shs96c]

The lock file is generated by serialising the artifacts from maven_install (in the common case, that's just a regular GAV tuple) and passing them to coursier. In this case, it looks like io.opencensus:opencensus-api:0.24.0 did something interesting: it went from including io.grpc:grpc-context:1.33.1 as a dependency to adding it to the exclusions.