Prepare Cosmovisor 1.6.0

[julienrbrt]

Long time since last cosmovisor release.
There are still some improvements in the pipelines and some to be fixed before 1.6.0, but we should strive to cut a new release this month.

To dos before release

• [Bug]: Cosmovisor's add-upgrade creates a binary that's not executable #20061 (fix(cosmovisor): fixed cosmovisor add-upgrade permissions #20062)
• [Feature]: Take configuration from config file instead of env vars on Cosmovisor #19764 (feat(cosmovisor): load cosmovisor configuration from toml file #19995)
• [Bug]: upgrade/plan.Info.ValidateFull cannot deal with differently-named binaries for different architectures #19871
• [Bug]: [Cosmovisor] Upgrade is applied immediately when using the --upgrade-height flag #19227
• Flaky cosmovisor test #18073
• [Feature]: Make cosmovisor run pass piped input to the binary #17053
• Cosmovisor fetch-upgrade command #10910