v9.0.2

What's Changed

• Bumps the version of internal dependencies to v9 that was introduced in PR #12
• Alignes the structure of the following events with polkadot-v1.0.0:
  • ElectionProviderMultiPhase_SolutionStored
  • Balances_BalanceSet
  • Democracy_Tabled
  • Sudo_KeyChanged
  • Sudo_SudoAsDone
  • Utility_DispatchedAs
  • Whitelist_WhitelistedCallDispatched
• Removes the following events due to their absence in polkadot-v1.0.0
  • Democracy_Executed
  • Democracy_PreimageInvalid
  • Democracy_PreimageMissing
  • Democracy_PreimageNoted
  • Democracy_PreimageReaped
  • Democracy_PreimageUsed
  • SignedPhaseStarted
  • UnsignedPhaseStarted
  • Society_NewMaxMembers
  • Scheduler_CallLookupFailed
• Switches dockerized integration tests from parity/polkadot:v0.9.43 image to cerebellumnetwork/pos-node:v5.1.2 image.

Full Changelog: v9.0.1-rc...v9.0.2