fix: fix test flow to install libsodium

[ulbqb]

Description

This PR has following changes.

• add test.yml to diff target in test.yml
• add step to install libsodium

related: #801

Motivation and context

Even if ci test is changed, the test is skipped. I missed that it had to install libsodium because of that.

How has this been tested?

Screenshots (if appropriate):

Checklist:

• I followed the contributing guidelines and code of conduct.
• I have added a relevant changelog to CHANGELOG.md
• I have added tests to cover my changes.
• I have updated the documentation accordingly.
• I have updated API documentation client/docs/swagger-ui/swagger.yaml

[codecov]

Codecov Report

Merging #803 (370682c) into rc9/v0.46.0 (6792efe) will increase coverage by 0.04%.
The diff coverage is 100.00%.

❗ Current head 370682c differs from pull request most recent head d8420de. Consider uploading reports for the commit d8420de to get more accurate results

Additional details and impacted files

@@               Coverage Diff               @@
##           rc9/v0.46.0     #803      +/-   ##
===============================================
+ Coverage        62.15%   62.20%   +0.04%     
===============================================
  Files              877      877              
  Lines            99419    99419              
===============================================
+ Hits             61796    61845      +49     
+ Misses           34019    33960      -59     
- Partials          3604     3614      +10     

Impacted Files	Coverage Δ
x/collection/keeper/supply.go	89.11% <100.00%> (ø)
x/token/validation.go	72.72% <0.00%> (-12.73%)	⬇️
crypto/keys/internal/ecdsa/privkey.go	82.45% <0.00%> (-1.76%)	⬇️
x/wasm/keeper/keeper.go	86.53% <0.00%> (+0.36%)	⬆️
x/token/msgs.go	53.99% <0.00%> (+4.56%)	⬆️
x/collection/msgs.go	53.72% <0.00%> (+5.80%)	⬆️
x/token/token.go	100.00% <0.00%> (+50.00%)	⬆️