Increase grpc max recv size

[rafaelroquetto]

The neto11y tests are generating more metrics, which are causing the collector ingest to overflow and reject them.

[grcevski]

LGTM!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.00%. Comparing base (0a0bab2) to head (a12873a).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #633       +/-   ##
===========================================
+ Coverage   44.34%   62.00%   +17.66%     
===========================================
  Files         195      199        +4     
  Lines       21846    22045      +199     
===========================================
+ Hits         9688    13670     +3982     
+ Misses      11387     7407     -3980     
- Partials      771      968      +197     

Flag	Coverage Δ
integration-test-arm	36.63% <ø> (+2.10%)	⬆️
k8s-integration-test-1854-	50.12% <ø> (?)
oats-test	36.68% <ø> (-0.55%)	⬇️

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