Release v1.6.9

Docker reference: paritytech/substrate-relay:v1.6.9

Bundled Chain Versions:

Rococo: 1_010_000;
Westend: 1_010_000;
Kusama: 1_002_004;
Polkadot: 1_002_000;
Rococo Bridge Hub: 1_016_000;
Westend Bridge Hub: 1_016_000;
Kusama Bridge Hub: 1_003_000;
Polkadot Bridge Hub: 1_002_008;
Rococo Bulletin: not supported yet;
Polkadot Bulletin: not supported yet.

What's Changed

• Bump serde_json from 1.0.122 to 1.0.124 by @dependabot in #3040
• Bump tempfile from 3.11.0 to 3.12.0 by @dependabot in #3039
• Bump serde from 1.0.204 to 1.0.206 by @dependabot in #3038
• Bump serde from 1.0.206 to 1.0.208 by @dependabot in #3041
• Bump serde_json from 1.0.124 to 1.0.125 by @dependabot in #3042
• Bump serde_json from 1.0.125 to 1.0.127 by @dependabot in #3045
• Bump quote from 1.0.36 to 1.0.37 by @dependabot in #3044
• Bump serde from 1.0.208 to 1.0.209 by @dependabot in #3043
• Release v1.6.9: added support for bridge-hub-kusama/1003000 by @bkontur in #3048

Full Changelog: v1.6.8...v1.6.9