fix: sdkmath type in PoolSnapshot

[saiSunkari19]

Description

Closes: #XXXX

typo fixes

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Author Checklist

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch
• provided a link to the relevant issue or specification
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[MonikaCat]

Hey @saiSunkari19 can you also update go version to 1.18 to fix unit tests and include entry inside CHANGELOG.md? Thanks!

[saiSunkari19]

Sure, I will do that, but current upstream branch is with 1.19. Do you want me to update that

[MonikaCat]

Hi @saiSunkari19 yes please, thanks!

[MonikaCat]

Hey @saiSunkari19 can you update go version to 1.18 on this line please? Thanks 👍🏻

[saiSunkari19]

Updated, Thanks