feat(AMD Cert): Always fetch from CORS

[Ansonhkg]

Description

AMD certificate endpoints are rate limited, so we are going to always use our Lit CORS server caches certificates locally to avoid hitting the rate limit.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Test Command

DEBUG=true yarn test:e2e:node --filter=multi-network          

Result

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[MaximusHaximus]

Added a few things in-line 💖

Just out of curiosity, do we know what the rate limits are or how they are enforced (e.g. by IP address?).

[MaximusHaximus]

👍 LGTM! 🚢