diagnostics: 4.2.1-1 in 'jazzy/distribution.yaml' [bloom]

[ct2034]

Increasing version of package(s) in repository diagnostics to 4.2.1-1:

• upstream repository: https://github.com/ros/diagnostics.git
• release repository: https://github.com/ros2-gbp/diagnostics-release.git
• distro file: jazzy/distribution.yaml
• bloom version: 0.12.0
• previous version for package: 3.1.2-3

diagnostic_aggregator

• No changes

diagnostic_common_diagnostics

* fixing pep257 problems introduced by #334 <https://github.com/ros/diagnostics/issues/334> (#384 <https://github.com/ros/diagnostics/issues/384>) (#392 <https://github.com/ros/diagnostics/issues/392>)
* Fixing ntp launchtest (#330 <https://github.com/ros/diagnostics/issues/330>) (#391 <https://github.com/ros/diagnostics/issues/391>)
* Port hd_monitor to ROS2 (#334 <https://github.com/ros/diagnostics/issues/334>) (#383 <https://github.com/ros/diagnostics/issues/383>)
* Contributors: Christian Henkel, Richardvdketterij, Richard

diagnostic_updater

* Fix correctly exporting the library (#388 <https://github.com/ros/diagnostics/issues/388>)
* Contributors: Ramon Wijnands

diagnostics

• No changes

self_test

• No changes