feat: deprecate x/params usage in x/distr

CHANGELOG.md

@@ -53,6 +53,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 * (x/slashing) [#12399](https://github.com/cosmos/cosmos-sdk/pull/12399) Migrate `x/slashing` to self-managed parameters and deprecate its usage of `x/params`.
 * (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`.
 
 ### API Breaking Changes
 
@@ -65,6 +66,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (testutil) [#12233](https://github.com/cosmos/cosmos-sdk/pull/12233) Move `simapp.TestAddr` to `simtestutil.TestAddr` (`testutil/sims`)
 * (x/staking) [#12102](https://github.com/cosmos/cosmos-sdk/pull/12102) Staking keeper now is passed by reference instead of copy. Keeper's SetHooks no longer returns keeper. It updates the keeper in place instead.
 * (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`.
 
 
 ### Bug Fixes