fix proxy-wasm-cpp-sdk

[johnlanni]

Ⅰ. Describe what this PR did

Previously, the emsdk that the proxy-wasm-cpp-sdk depended on had an issue with its configuration, as it did not support heap grow size. This would cause memory allocation failures when handling requests with large bodies.

Ⅱ. Does this pull request fix one issue?

fixes #2219 #2098

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.73%. Comparing base (ef31e09) to head (fac2605).
Report is 510 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2281      +/-   ##
==========================================
+ Coverage   35.91%   45.73%   +9.82%     
==========================================
  Files          69       79      +10     
  Lines       11576    12912    +1336     
==========================================
+ Hits         4157     5905    +1748     
+ Misses       7104     6659     -445     
- Partials      315      348      +33     

see 77 files with indirect coverage changes

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