more validators

Backports for v0.8.28-rc4 (paritytech#2386)

* Cancel Proxy Type (paritytech#2334)

* cancel proxy

* fix

* Remove reject_announcement and add CancelProxy to westend

Co-authored-by: David Dorgan <[email protected]>

* node: pass local authorship info to the transaction pool (paritytech#2385)

* node: pass local authorship to the transaction pool

* update substrate

Co-authored-by: Shawn Tabrizi <[email protected]>
Co-authored-by: David Dorgan <[email protected]>

v0.8.28-rc3 (paritytech#2350)

* switch substrate to polkadot-v0.8.28 branch

* Bump substrate, backport substrate/pulls#8006

Use Extensible Multiaddress in all Polkadot Runtimes (paritytech#2126)

* Use extensible multiaddress

* copy pasta

bump transaction_version for polkadot + kusama (paritytech#2330)

4 additional bootnodes added (paritytech#2213)

added new bootnode to chain spec's (paritytech#2204)

* added new bootnode to chain spec's

* remove trailing newline