feat: Add MsgSoftwareUpgrade and MsgCancelUpgrade (for new msgs-based gov proposals)

CHANGELOG.md

@@ -39,6 +39,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Features
 
+* (x/upgrade) [\#11116](https://github.com/cosmos/cosmos-sdk/pull/11116) A new `MsgSoftwareUpgrade` has been added to support v1beta2 msgs-based gov proposals.
 * [\#10977](https://github.com/cosmos/cosmos-sdk/pull/10977) Now every cosmos message protobuf definition must be extended with a ``cosmos.msg.v1.signer`` option to signal the signer fields in a language agnostic way.
 * [\#10710](https://github.com/cosmos/cosmos-sdk/pull/10710) Chain-id shouldn't be required for creating a transaction with both --generate-only and --offline flags.
 * [\#10703](https://github.com/cosmos/cosmos-sdk/pull/10703) Create a new grantee account, if the grantee of an authorization does not exist.
@@ -69,6 +70,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### API Breaking Changes
 
+* (x/gov) [\#11116](https://github.com/cosmos/cosmos-sdk/pull/11116) The `NewAppModuleBasic` function now accepts both msgs-based proposal CLI handlers and legacy content-based proposal CLI handlers as arguments.
 * (store)[\#11152](https://github.com/cosmos/cosmos-sdk/pull/11152) Remove `keep-every` from pruning options.
 * [\#10950](https://github.com/cosmos/cosmos-sdk/pull/10950) Add `envPrefix` parameter to `cmd.Execute`.
 * (x/mint) [\#10441](https://github.com/cosmos/cosmos-sdk/pull/10441) The `NewAppModule` function now accepts an inflation calculation function as an argument.