feat: update envoy for multi-arch support

[strophy]

Updates envoy version to 1.16, the first release to officially support ARM architecture.

Issue being fixed or feature implemented

This updates envoy to a version with ARM support so we can begin to support the evo stack on devices like Raspberry Pi or AWS Graviton2.

What was done?

Bump envoy version

How Has This Been Tested?

Tested locally to see if anything fails to load, everything seems fine. Envoy logs contain a few new messages about deprecated config syntax, in addition to a few deprecation notices that were already present in 1.14 logs. I can try to fix this, or someone with a better understanding of what envoy is doing in the evo stack could do it instead.

Breaking Changes

None

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have made corresponding changes to the documentation

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone

[shumkov]

👍

The base branch was changed.