Minor governance param adjustment

[Dinonard]

Pull Request Summary

Adjusted local runtime params to make testing scenarios described in the docs easier.
Current timing was sometimes too fast, which made it difficult to detect certain changes.

Also added missing settings for Shibuya runtime in respect with setting oracle members.
Slightly modified timing params for democracy.

[github-actions]

Package	Line Rate	Branch Rate	Health
chain-extensions/types/assets/src	0%	0%	❌
pallets/dapp-staking-v3/rpc/runtime-api/src	0%	0%	❌
pallets/xvm/src	54%	0%	➖
pallets/static-price-provider/src	52%	0%	➖
precompiles/dapp-staking-v3/src	90%	0%	✔
chain-extensions/types/xvm/src	0%	0%	❌
pallets/dapp-staking-v3/src/benchmarking	98%	0%	✔
precompiles/unified-accounts/src	100%	0%	✔
pallets/collator-selection/src	92%	0%	✔
precompiles/xcm/src	73%	0%	➖
primitives/src/xcm	64%	0%	➖
chain-extensions/pallet-assets/src	56%	0%	➖
pallets/oracle-benchmarks/src	0%	0%	❌
precompiles/dispatch-lockdrop/src	86%	0%	✔
pallets/collective-proxy/src	86%	0%	✔
pallets/astar-xcm-benchmarks/src/fungible	100%	0%	✔
precompiles/assets-erc20/src	81%	0%	✔
pallets/ethereum-checked/src	79%	0%	➖
chain-extensions/unified-accounts/src	0%	0%	❌
pallets/price-aggregator/src	72%	0%	➖
pallets/astar-xcm-benchmarks/src	88%	0%	✔
pallets/inflation/src	83%	0%	✔
pallets/dynamic-evm-base-fee/src	89%	0%	✔
pallets/xc-asset-config/src	64%	0%	➖
pallets/dapp-staking-v3/src	90%	0%	✔
chain-extensions/xvm/src	0%	0%	❌
chain-extensions/types/unified-accounts/src	0%	0%	❌
pallets/unified-accounts/src	86%	0%	✔
precompiles/substrate-ecdsa/src	74%	0%	➖
precompiles/xvm/src	75%	0%	➖
precompiles/sr25519/src	64%	0%	➖
pallets/astar-xcm-benchmarks/src/generic	100%	0%	✔
precompiles/dapp-staking-v3/src/test	0%	0%	❌
pallets/dapp-staking-migration/src	0%	0%	❌
pallets/dapp-staking-v3/src/test	0%	0%	❌
primitives/src	62%	0%	➖
Summary	77% (3704 / 4796)	0% (0 / 0)	➖

Minimum allowed line rate is 50%