v11.9.0-rc0

What's Changed

• chore: comment fix for v11 upgrade mainnet. by @puneet2019 in #309
• feat: add swagger docs by @puneet2019 in #311
• ci: heighliner docker image by @ajeet97 in #313
• fix: swagger gen using proto-builder image by @ajeet97 in #315
• chore: sdk v0.47.10 + deps version bumps by @ajeet97 in #312
• chore: update pstake version. by @puneet2019 in #316
• fix: update ibc-go version. by @puneet2019 in #317
• chore: update testnet rc upgrade handler by @kruspy in #318

Full Changelog: v11.8.1...v11.9.0-rc0