chore(upgrade): v1.5.0 to v1.6.0

[enddynayn]

• Upgrade Polkadot-sdk to v.1.6.0.
• Update weights to reflect the new version.

Notable Changes:

• Rename ExportGenesisStateCommand to ExportGenesisHeadCommand

For more details, please refer to:

Release Notes Release Analysis

1841

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Files	Coverage Δ
pallets/handles/src/lib.rs	91.45% <100.00%> (ø)
pallets/msa/src/lib.rs	88.07% <100.00%> (ø)