v1.4.3

Fixes

• Fix OS check for RHEL in tiup-cluster (#1336, @AstroProfundis)
• Check for command depends before downloading packages in install script (#1348, @AstroProfundis)
• Fix the issue that install script downloads an old TiUP package (#1349, @lucklove)
• Fix the issue that drainer node imported from TiDB-Ansible may have incorrect data_dir (#1346, @AstroProfundis)

Improvements

• Optimize some subcommands of tiup mirror (#1331, @AstroProfundis)
• Set proper User-Agent for requests downloading manifests and files from remote (#1342, @AstroProfundis)
• Add basic telemetry report for tiup and playground (#1341 #1353, @AstroProfundis)