Stargaze v18 Upgrade

Changes

• Pauser module: New module that allows pausing CosmWasm contract execution via governance or authorized addresses. Includes support for cron-based automation and CW hooks integration.
• Dependency upgrades:
  • CosmWasm/wasmd v0.54.1 -> v0.54.6
  • CosmWasm/wasmvm v2.2.4 -> v2.3.2
  • CometBFT v0.38.18 -> v0.38.21
  • Cosmos SDK v0.50.14 -> v0.50.15
  • IBC-Go v8.7.0 -> v8.8.0

Check Upgrade Instructions for block height and time.