feat(v2.6): upgrade wasmvm 1.4.3

[emidev98]

This will upgrade to fix the memory usage increases over time described here CosmWasm/cosmwasm#1978.
Full tag information available: https://github.com/CosmWasm/wasmvm/releases/tag/v1.4.3

It is also recommended to increase the memory_cache_size from the file app.toml to 1000MiB for mainnets and 500MiB for the testnets. Depending on the usage and amount of request, it will always be dependent on the validator:

[wasm]
# other wasm config entries
memory_cache_size = 1000 # MiB

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b01f4e1) 68.28% compared to head (0ce4c17) 68.28%.
Report is 1 commits behind head on release/v2.6.

Additional details and impacted files

@@              Coverage Diff              @@
##           release/v2.6     #258   +/-   ##
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  Coverage         68.28%   68.28%           
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  Files                43       43           
  Lines              2327     2327           
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  Hits               1589     1589           
  Misses              583      583           
  Partials            155      155