chore: increment handler for v12.2.0 (#1673)

Co-authored-by: Tanmay <[email protected]>

app/setup_handlers.go

@@ -5,10 +5,9 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
 	"github.com/cosmos/cosmos-sdk/x/upgrade/types"
-	observerTypes "github.com/zeta-chain/zetacore/x/observer/types"
 )
 
-const releaseVersion = "v12.1.0"
+const releaseVersion = "v12.2.0"
 
 func SetupHandlers(app *App) {
 	app.UpgradeKeeper.SetUpgradeHandler(releaseVersion, func(ctx sdk.Context, plan types.Plan, vm module.VersionMap) (module.VersionMap, error) {
@@ -17,7 +16,6 @@ func SetupHandlers(app *App) {
 		for m, mb := range app.mm.Modules {
 			vm[m] = mb.ConsensusVersion()
 		}
-		vm = VersionMigrator{vm}.TriggerMigration(observerTypes.ModuleName)
 
 		return app.mm.RunMigrations(ctx, app.configurator, vm)
 	})