update kusama fees to v1.0.0 and rollback polkadot links to v0.9.43

[eshaben]

Description

This PR updates the fees page for Kusama v1.0.0 and reverts the Polkadot links back to the deprecated repo where v0.9.43 was released. As announced in the v1.0.0 release notes, all runtime code has been moved to the fellowship PR, so this impacts the benchmarked weights.

To summarize:

• For v0.9.43 we should be using the now-deprecated repo for Polkadot weights: https://github.com/paritytech/polkadot/blob/v0.9.43
• For v1.0.0, we should be using the fellowship repo for Kusama weights: https://github.com/polkadot-fellows/runtimes/tree/v1.0.0

Once Polkadot is on v1.0.0, we'll have to update the links to point to the fellowship PR.

This PR also updates the polkadot-sdk links on the fees page so that we point to v1.1.0, which is the version we migrated to as of RT2601.

You can double-check the calculated fees by looking at any xcKSM > KSM transaction that includes the instructions listed in the docs (WithdrawAsset, ClearOrigin, BuyExecution, and DepositAsset). For example:

• XCM Transfer: https://moonriver.subscan.io/xcm_message/kusama-4cb563c7c97599c510f6817530ae188894f20961
• Extrinsic on Kusama: https://kusama.subscan.io/extrinsic/20567957-0?event=20567957-3
• Block that includes the Extrinsic: https://kusama.subscan.io/block/20567957?tab=event
• View the balances(Deposit) events (should be two per XCM) and the balances(Withdraw) event (should be one per XCM):
  • balances(Withdraw) - 13.0000900058 KSM 👈 Transfer amount
  • balances(Deposit) - 13.000008226255 KSM 👈 Amount received in destination account (less fees)
  • balances(Deposit) - 0.000081779545 KSM 👈 Fees paid for the XCM execution

Goes with CN PR: moonbeam-foundation/moonbeam-docs-cn#360

[eshaben]

Some of this overlaps with what I've done in the XCM overhaul. This PR just gets everything back to working order and then everything will be cleaned up in the XCM overhaul PR

[themacexpert]

LGTM