fix: adding checks to ensure coin denoms are sorted in Balance duri…

…ng `Validate` (backport cosmos#9829) (cosmos#10849)

* adding checks to ensure denoms are sorted

(cherry picked from commit ce1e650)

* updating changelog

(cherry picked from commit 2cea5e5)

# Conflicts:
#	CHANGELOG.md

* refactoring balance.coin validation

(cherry picked from commit 40d22c7)

* adding 0 value coin test case

(cherry picked from commit 2468b64)

* added valid sorted coin testcase

(cherry picked from commit 66b91ee)

* updating changelog

(cherry picked from commit 59b788a)

# Conflicts:
#	CHANGELOG.md

* conflicts

Co-authored-by: Spoorthi <9302666+spoo-bar@users.noreply.github.com>
Co-authored-by: Federico Kunze Küllmer <federico.kunze94@gmail.com>

CHANGELOG.md

@@ -37,8 +37,6 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
-## [v0.45.0](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.0) - 2021-12-07
-
 ### State Machine Breaking
 
 * (auth) [\#10536](https://github.com/cosmos/cosmos-sdk/pull/10536]) Enable `SetSequence` for `ModuleAccount`.
@@ -62,6 +60,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 * (types) [\#9627](https://github.com/cosmos/cosmos-sdk/pull/9627) Fix nil pointer panic on `NewBigIntFromInt`.
 * [#10725](https://github.com/cosmos/cosmos-sdk/pull/10725) populate `ctx.ConsensusParams` for begin/end blockers.
+* [\#9829](https://github.com/cosmos/cosmos-sdk/pull/9829) Fixed Coin denom sorting not being checked during `Balance.Validate` check. Refactored the Validation logic to use `Coins.Validate` for `Balance.Coins`
 
 ## [v0.44.5](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.44.5) - 2021-12-02