Rename ProposalsSnapshot to Proposals

[aniketd]

Description

Closes #3857

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• New tests are added if needed and existing tests are updated
• When applicable, versions are updated in .cabal and CHANGELOG.md files according to the
  versioning process.
• The version bounds in .cabal files for all affected packages are updated. If you change the bounds in a cabal file, that package itself must have a version increase. (See RELEASING.md)
• All visible changes are prepended to the latest section of a CHANGELOG.md for the affected packages. New section is never added with the code changes. (See RELEASING.md)
• Code is formatted with fourmolu (use scripts/fourmolize.sh)
• Cabal files are formatted (use scripts/cabal-format.sh)
• hie.yaml has been updated (use scripts/gen-hie.sh)
• Self-reviewed the diff

[teodanciu]

Do we need to increment, in cardano-ledger-pretty package, the version bound of cardano-ledger-conway to 1.11.0 ?
https://github.com/input-output-hk/cardano-ledger/blob/aniketd/rename-snapshots-to-proposals/libs/cardano-ledger-pretty/cardano-ledger-pretty.cabal#L43

Looks good to me otherwise.

[lehins]

Do we need to increment, in cardano-ledger-pretty package, the version bound of cardano-ledger-conway to 1.11.0 ?

Yes we do

[aniketd]

Thanks for the reviews! I have implemented the suggestions and pushed the update.

[lehins]

@aniketd Looks like my PR created a conflict for you.

[aniketd]

No worries @lehins! I got it!