Update CI badges in README (#239)

Signed-off-by: Ian Chen <ichen@openrobotics.org>

README.md

@@ -9,10 +9,10 @@
 
 Build | Status
 -- | --
-Test coverage | [![codecov](https://codecov.io/gh/gazebosim/gz-launch/branch/main/graph/badge.svg)](https://codecov.io/gh/gazebosim/gz-launch)
-Ubuntu Focal | [![Build Status](https://build.osrfoundation.org/buildStatus/icon?job=ignition_launch-ci-main-focal-amd64)](https://build.osrfoundation.org/job/ignition_launch-ci-main-focal-amd64)
-Homebrew      | [![Build Status](https://build.osrfoundation.org/buildStatus/icon?job=ignition_launch-ci-main-homebrew-amd64)](https://build.osrfoundation.org/job/ignition_launch-ci-main-homebrew-amd64)
-Windows       | [![Build Status](https://build.osrfoundation.org/job/ign_launch-ci-win/badge/icon)](https://build.osrfoundation.org/job/ign_launch-ci-win/)
+Test coverage | [![codecov](https://codecov.io/gh/gazebosim/gz-launch/tree/gz-launch7/graph/badge.svg)](https://codecov.io/gh/gazebosim/gz-launch/tree/gz-launch7)
+Ubuntu Jammy  | [![Build Status](https://build.osrfoundation.org/buildStatus/icon?job=gz_launch-ci-gz-launch7-jammy-amd64)](https://build.osrfoundation.org/job/gz_launch-ci-gz-launch7-jammy-amd64)
+Homebrew      | [![Build Status](https://build.osrfoundation.org/buildStatus/icon?job=gz_launch-ci-gz-launch7-homebrew-amd64)](https://build.osrfoundation.org/job/gz_launch-ci-gz-launch7-homebrew-amd64)
+Windows       | [![Build Status](https://build.osrfoundation.org/job/gz_launch-7-win/badge/icon)](https://build.osrfoundation.org/job/gz_launch-7-win/)
 
 Gazebo Launch, a component of [Gazebo](https://gazebosim.org), provides a command line interface
 to run and manager application and plugins.