Add 2.18 release notes (#450)

Signed-off-by: zane-neo <[email protected]>

release-notes/opensearch-skills.release-notes-2.18.0.0.md

@@ -0,0 +1,16 @@
+# 2024-10-23 Version 2.18.0.0
+
+Compatible with OpenSearch 2.18.0
+
+### Features
+Add LogPatternTool ([#413](https://github.com/opensearch-project/skills/pull/413))
+Optimize the default prompt and make prompt customizable for create anomaly detector tool ([399](https://github.com/opensearch-project/skills/pull/399))
+
+### Maintenance
+Fix test failure due to external change ([#427](https://github.com/opensearch-project/skills/pull/427))
+fix(deps): update dependency net.bytebuddy:byte-buddy-agent to v1.15.4 ([#279](https://github.com/opensearch-project/skills/pull/279))
+fix(deps): update dependency net.bytebuddy:byte-buddy to v1.15.4 ([#43](https://github.com/opensearch-project/skills/pull/43))
+fix(deps): update junit5 monorepo to v5.11.2 ([#363](https://github.com/opensearch-project/skills/pull/363))
+chore(deps): update dependency gradle to v8.10.2 ([#432](https://github.com/opensearch-project/skills/pull/432))
+chore(deps): update plugin io.freefair.lombok to v8.10.2 ([#434](https://github.com/opensearch-project/skills/pull/434))
+fix(deps): update mockito monorepo to v5.14.2 ([#437](https://github.com/opensearch-project/skills/pull/437))