fix(ci): add missing `install` command to ampd arm compilation

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 93.54%. Comparing base (d7bb8e7) to head (51715d4). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #635 +/- ## ======================================= Coverage 93.54% 93.54% ======================================= Files 241 241 Lines 33883 33883 ======================================= Hits 31697 31697 Misses 2186 2186 ``` | [Flag](https://app.codecov.io/gh/axelarnetwork/axelar-amplifier/pull/635/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=axelarnetwork) | Coverage Δ | | |---|---|---| | [](https://app.codecov.io/gh/axelarnetwork/axelar-amplifier/pull/635/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=axelarnetwork) | `93.54% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=axelarnetwork#carryforward-flags-in-the-pull-request-comment) to find out more.

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.