bump datadog-ci dependency to 0.2

[anmarchenko]

What does this PR do?
Bumps datadog-ci runtime dependency to 0.2

Release notes:

Added

• Agentless mode

Fixed

• Fix an issue with emojis in commit message breaking LocalGit tags provider

Motivation:
Introducing agentless mode for CI visibility product

How to test the change?

git clone https://github.com/DataDog/test-environment

cd test-environment

yarn

cd dd-trace-rb/jekyll
bundle add ddtrace --git "https://github.com/DataDog/dd-trace-rb.git" --branch "anmarchenko/ci_vis_0.2" --skip-install
bundle install --path .bundle
cd ../..

yarn test dd-trace-rb/jekyll.test.js

cd dd-trace-rb/devdocs
bundle add ddtrace --git "https://github.com/DataDog/dd-trace-rb.git" --branch "anmarchenko/ci_vis_0.2" --skip-install
bundle install --path .bundle
cd ../..

yarn test dd-trace-rb/devdocs.test.js

For Datadog employees:

• If this PR touches code that signs or publishes builds or packages, or handles
  credentials of any kind, I've requested a review from @DataDog/security-design-and-guidance.
• This PR doesn't touch any of that.

[ivoanjo]

👍 LGTM