[Bugfix] Bump wasmvm to v0.16.2

[yun-yeo]

Summary of changes

close #599

This update is security update of wasmvm ref.

The problem monitored only happens in the nodes which are receiving wasm queries, so the query nodes are highly recommended to update ASAP to avoid node crash.

Report of required housekeeping

• Github issue OR spec proposal link
• Wrote tests
• Updated API documentation (client/lcd/swagger-ui/swagger.yaml)
• Added a relevant changelog entry: clog add [section] [stanza] [message]

---

(FOR ADMIN) Before merging

• Added appropriate labels to PR
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)
• Confirm added tests are consistent with the intended behavior of changes
• Ensure all tests pass

[codecov]

Codecov Report

Merging #603 (6c99418) into main (6235f92) will decrease coverage by 0.11%.
The diff coverage is 84.61%.

@@            Coverage Diff             @@
##             main     #603      +/-   ##
==========================================
- Coverage   44.81%   44.69%   -0.12%     
==========================================
  Files         122      120       -2     
  Lines        7016     6967      -49     
==========================================
- Hits         3144     3114      -30     
+ Misses       3627     3614      -13     
+ Partials      245      239       -6     

Impacted Files	Coverage Δ
x/wasm/keeper/legacy_querier.go	33.73% <ø> (-1.50%)	⬇️
x/wasm/keeper/querier.go	33.33% <ø> (-2.06%)	⬇️
x/wasm/types/keys.go	0.00% <ø> (ø)
x/wasm/keeper/keeper.go	84.26% <78.94%> (+2.45%)	⬆️
x/wasm/keeper/contract.go	79.84% <89.47%> (+0.84%)	⬆️
x/wasm/genesis.go	66.66% <100.00%> (ø)
x/oracle/tally.go	86.48% <0.00%> (-5.41%)	⬇️