Mark v1.18.0-rc1 in the changelog. (#1826)

CHANGELOG.md

@@ -37,6 +37,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## [Unreleased]
 
+* nothing
+
+## [v1.18.0-rc1](https://github.com/provenance-io/provenance/releases/tag/v1.18.0-rc1) - 2024-01-30
+
 ### Features
 
 * Add the ibcratelimit module [#1498](https://github.com/provenance-io/provenance/issues/1498).
@@ -97,6 +101,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 - Bump `cosmossdk.io/errors` from 1.0.0 to 1.0.1 ([#1806](https://github.com/provenance-io/provenance/pull/1806))
 - Bump `actions/cache` from 3 to 4 ([#1817](https://github.com/provenance-io/provenance/pull/1817))
 
+### Full Commit History
+
+* https://github.com/provenance-io/provenance/compare/v1.17.1...v1.18.0-rc1
+
 ---
 
 ## [v1.17.1](https://github.com/provenance-io/provenance/releases/tag/v1.17.1) - 2024-01-11