Don't request changelog for MR with some labels

Namely the `ci-build` and `meta` labels.

Signed-off-by: Rémy Coutable <remy@rymai.me>

danger/changelog/Dangerfile

@@ -2,7 +2,7 @@
 require 'yaml'
-NO_CHANGELOG_LABELS = %w[backstage Documentation QA test].freeze
+NO_CHANGELOG_LABELS = %w[backstage ci-build Documentation meta QA test].freeze
 SEE_DOC = "See [the documentation](https://docs.gitlab.com/ce/development/changelog.html).".freeze
 CREATE_CHANGELOG_MESSAGE = <<~MSG.freeze
 You can create one with: