polkadot-sdk crates are now released on crates.io in accordance with the release process something every month, so should be fine include them with dependabot
* Make dependabot less aggressive
And ignore sp- crates, since they need to be updated together, and dependabot can't yet do grouped PRs.
We should periodically just keep on top of this anyway, but I don't think we need to be constantly updating them.
* dependency-name
* Try weekly instead of monthly
Niklas Adolfsson