Create RELEASE_NOTES.md

Create release notes

Author: taariq

RELEASE_NOTES.md

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+# Release Notes
+
+## What's Changed
+* update jailing parameters by @verabehr in https://github.com/palomachain/paloma/pull/1362
+* Update paloma version in README.md by @verabehr in https://github.com/palomachain/paloma/pull/1363
+
+
+**Full Changelog**: https://github.com/palomachain/paloma/compare/v2.4.11...v2.4.12