11.2.1 - Road to Parachain

additional storage upgrades needed for migration to parachain

What's Changed

• feat: add snakenet migration script by @enthusiastmartin in #371
• feat: migration - triple balance and claims by @enthusiastmartin in #375
• fix: added collective and tips storage migrations by @lumir-mrkva in #376
• feat: snakenet migration of other modules by @enthusiastmartin in #379
• fix: changed base OS in the dockerfile by @martinfridrich in #384
• fix: migration - use weight split by @enthusiastmartin in #387

Full Changelog: v11.2.0...v11.2.1