Merge pull request from GHSA-86h5-xcpx-cfqc

* fix slashing hole with test

* release notes + changelog

* word

* date

* updates

---------

Co-authored-by: Julien Robert <julien@rbrt.fr>

testutil/sims/app_helpers.go

@@ -11,6 +11,8 @@ import (
 	cmttypes "github.com/cometbft/cometbft/types"
 	dbm "github.com/cosmos/cosmos-db"
 
+	coreheader "cosmossdk.io/core/header"
+
 	"cosmossdk.io/depinject"
 	sdkmath "cosmossdk.io/math"
 
@@ -107,6 +109,35 @@ func SetupAtGenesis(appConfig depinject.Config, extraOutputs ...interface{}) (*r
 	return SetupWithConfiguration(appConfig, cfg, extraOutputs...)
 }
 
+// NextBlock starts a new block.
+func NextBlock(app *runtime.App, ctx sdk.Context, jumpTime time.Duration) (sdk.Context, error) {
+	_, err := app.FinalizeBlock(&abci.RequestFinalizeBlock{Height: ctx.BlockHeight(), Time: ctx.BlockTime()})
+	if err != nil {
+		return sdk.Context{}, err
+	}
+	_, err = app.Commit()
+	if err != nil {
+		return sdk.Context{}, err
+	}
+
+	newBlockTime := ctx.BlockTime().Add(jumpTime)
+
+	header := ctx.BlockHeader()
+	header.Time = newBlockTime
+	header.Height = header.Height + 1
+
+	newCtx := app.BaseApp.NewUncachedContext(false, header).WithHeaderInfo(coreheader.Info{
+		Height: header.Height,
+		Time:   header.Time,
+	})
+
+	if err != nil {
+		return sdk.Context{}, err
+	}
+
+	return newCtx, err
+}
+
 // SetupWithConfiguration initializes a new runtime.App. A Nop logger is set in runtime.App.
 // appConfig defines the application configuration (f.e. app_config.go).
 // extraOutputs defines the extra outputs to be assigned by the dependency injector (depinject).