Use brew trust osrf/simulation in CI scripts

[scpeters]

Homebrew's package descriptions (formulae) are implemented as executable ruby code, which can lead to security issues when using 3rd-party taps, so they have recently added a brew trust command to help mitigate security issues, documented here. It will soon be required to use brew trust osrf/simulation after brew tap osrf/simulation in order to run additional commands like brew install gz-jetty. I have added these commands to our CI scripts to fix brew doctor complaints in CI:

Using release-tools master branch

https://build.osrfoundation.org/job/gz_rotary_cmake-install_formula-homebrew-amd64/82/

11:12:34 + brew doctor
11:12:35 Please note that these warnings are just used to help the Homebrew maintainers
11:12:35 with debugging if you file an issue. If everything you use Homebrew for is
11:12:35 working fine: please don't worry or file an issue; just ignore this. Thanks!
11:12:35 
11:12:35 Warning: The following taps are not trusted:
11:12:35   osrf/simulation
11:12:35 
11:12:35 Homebrew will ignore formulae, casks and commands from these taps when `HOMEBREW_REQUIRE_TAP_TRUST` is set.
11:12:35 This will become the default in Homebrew 6.0.0 or 5.2.0, whichever comes first.
11:12:35 Enable trust checks now with:
11:12:35   export HOMEBREW_REQUIRE_TAP_TRUST=1
11:12:35 Trust specific formulae, casks or commands with:
11:12:35   brew trust --formula <user>/<tap>/<formula>
11:12:35   brew trust --cask <user>/<tap>/<cask>
11:12:35   brew trust --command <user>/<tap>/<command>
11:12:35 or trust installed formulae from these taps with:
11:12:35   brew trust --formula osrf/simulation/gz-rotary-cmake
11:12:35 You can trust all formulae, casks and commands from these taps with:
11:12:35   brew trust osrf/simulation
11:12:35 Prefer trusting only the specific formulae, casks or commands you need.
11:12:35 Untap them with:
11:12:35   brew untap osrf/simulation
11:12:35 To keep allowing them by default during the transition:
11:12:35   export HOMEBREW_NO_REQUIRE_TAP_TRUST=1
11:12:35 This is not recommended and will be removed in a later release.

Using this branch

https://build.osrfoundation.org/job/gz_rotary_cmake-install_formula-homebrew-amd64/83/

[scpeters]

this is now required since brew 6.0.0 has been released

[j-rivero]

good to me, sorry for the delay