feat: deprecate x/params usage in x/gov

CHANGELOG.md

@@ -65,6 +65,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/mint) [#12363](https://github.com/cosmos/cosmos-sdk/pull/12363) Migrate `x/mint` to self-managed parameters and deprecate it's usage of `x/params`.
 * (x/distribution) [#12434](https://github.com/cosmos/cosmos-sdk/pull/12434) Migrate `x/distribution` to self-managed parameters and deprecate it's usage of `x/params`.
 * (x/crisis) [#12445](https://github.com/cosmos/cosmos-sdk/pull/12445) Migrate `x/crisis` to self-managed parameters and deprecate it's usage of `x/params`.
+* (x/gov) [#12631](https://github.com/cosmos/cosmos-sdk/pull/12631) Migrate `x/gov` to self-managed parameters and deprecate it's usage of `x/params`.
 
 ### API Breaking Changes
 
@@ -82,6 +83,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (linting) [#12141](https://github.com/cosmos/cosmos-sdk/pull/12141) Fix usability related linting for database.  This means removing the infix Prefix from `prefix.NewPrefixWriter` and such so that it is `prefix.NewWriter` and making `db.DBConnection` and such into `db.Connection`
 * (x/distribution) [#12434](https://github.com/cosmos/cosmos-sdk/pull/12434) `x/distribution` module `SetParams` keeper method definition is now updated to return `error`.
 * (x/crisis) [#12445](https://github.com/cosmos/cosmos-sdk/pull/12445) `x/crisis` module `SetConstantFee` keeper method definition is now updated to return `error`.
+* (x/gov) [#12631](https://github.com/cosmos/cosmos-sdk/pull/12631) `x/gov` module refactored to use `Params` as single struct instead of `DepositParams`, `TallyParams` & `VotingParams`.
 
 ### CLI Breaking Changes