chore: fix e2e tests

[zirain]

• re-enable GatewayInfraResource test
• use update with retry instead of patch
• remove deprecated migrateChartCRDs in EGUpgrade test

[netlify]

✅ Deploy Preview for cerulean-figolla-1f9435 canceled.

Name	Link
🔨 Latest commit	21a6599
🔍 Latest deploy log	https://app.netlify.com/projects/cerulean-figolla-1f9435/deploys/69ae99bd1c4f78000884cf01

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.14%. Comparing base (b1fe419) to head (21a6599).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8450      +/-   ##
==========================================
+ Coverage   74.10%   74.14%   +0.03%     
==========================================
  Files         242      242              
  Lines       37579    37579              
==========================================
+ Hits        27849    27863      +14     
+ Misses       7786     7775      -11     
+ Partials     1944     1941       -3     

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