update geth to at least 1.10.11

[chappjc]

I noticed that abigen from go-ethereum 1.10.10 is now generating a contract.go with breaking changes. The data has been reorganized, but it generates code for a version of the abi/bind package that apparently has breaking changes of its own.

A quick update of the require revealed other breaking changes. The main one that broke the build is that a node.Node no longer has account manager backends by default, requiring them to be registered. ethereum/go-ethereum#23019
This seems to require changes like:

- ks := node.AccountManager().Backends(keystore.KeyStoreType)[0].(*keystore.KeyStore)
+ ks := keystore.NewKeyStore(node.KeyStoreDir(), keystore.LightScryptN, keystore.LightScryptP)
+ node.AccountManager().AddBackend(ks)

[martonp]

@JoeGruffins Sorry if you were doing this, I didn't see the eyes there.

[JoeGruffins]

@martonp no problems! I'll always make an issue first. Didn't notice I needed to update though, will do now.