feat!: (x/gov) store an index of proposals that are in voting period

CHANGELOG.md

@@ -39,6 +39,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Features
 
+* (gov) [#13576](https://github.com/cosmos/cosmos-sdk/pull/13576) Add `GetProposalWithoutContents` and `SetProposalWithoutContents` to allow modifying proposals without incurring into high gas usage.
 * (core) [#13306](https://github.com/cosmos/cosmos-sdk/pull/13306) Add a `FormatCoins` function to in `core/coins` to format sdk Coins following the Value Renderers spec.
 * (math) [#13306](https://github.com/cosmos/cosmos-sdk/pull/13306) Add `FormatInt` and `FormatDec` functiosn in `math` to format integers and decimals following the Value Renderers spec.
 * (grpc) [#13485](https://github.com/cosmos/cosmos-sdk/pull/13485) Implement a new gRPC query, `/cosmos/base/node/v1beta1/config`, which provides operator configuration.
@@ -501,6 +502,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### State Machine Breaking
 
+* (x/gov) [#13576](https://github.com/cosmos/cosmos-sdk/pull/13576) Migrate proposals messages and metadata to a separate store.
 * (baseapp) [#11985](https://github.com/cosmos/cosmos-sdk/pull/11985) Add a `postHandler` to baseapp. This `postHandler` is like antehandler, but is run _after_ the `runMsgs` execution. It is in the same store branch that `runMsgs`, meaning that both `runMsgs` and `postHandler`
 * (x/gov) [#11998](https://github.com/cosmos/cosmos-sdk/pull/11998) Tweak the `x/gov` `ModuleAccountInvariant` invariant to ensure deposits are `<=` total module account balance instead of strictly equal.
 * (x/upgrade) [#11800](https://github.com/cosmos/cosmos-sdk/pull/11800) Fix `GetLastCompleteUpgrade` to properly return the latest upgrade.