add missing changelog entry for bump of sdk 0.45.3 (cosmos#1272)

## Description



closes: #XXXX

---

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- [ ] Added relevant `godoc` [comments](https://blog.golang.org/godoc-documenting-go-code).
- [x] Added a relevant changelog entry to the `Unreleased` section in `CHANGELOG.md`
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Author: crodriguezvega

CHANGELOG.md

@@ -38,6 +38,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Dependencies
 
+* [\#1247](https://github.com/cosmos/ibc-go/pull/1247) Bump SDK version to v0.45.3 and Tendermint to version 0.34.19
+
 ### API Breaking
 
 * (transfer) [\#1250](https://github.com/cosmos/ibc-go/pull/1250) Deprecate `GetTransferAccount` since the `transfer` module account is never used.