feat: bump polkadot versions to v0.9.37 (#452)

## fixes KILTProtocol/ticket#2392

## Breaking Changes for us

~~None! 🥳~~

Edit: Forgot to also check with try-runtime feature enabled. There is a
small tweak necessary because of [This PR about
on-runtime-upgrade](paritytech/substrate#13045)

No database migrations, no runtime migrations and no new host functions.

## Polkadot Release Link

https://github.com/paritytech/polkadot/releases/tag/v0.9.37

## Release Analysis Forum Post

https://forum.polkadot.network/t/polkadot-release-analysis-v0-9-37/1736

## Cool new stuff that might be useful (or not)

* [frame_support::storage: Add
StorageStreamIter](paritytech/substrate#12721)
* If we have a StorageValue that contains something iterable, we can
directly iterate over it, without copying the memory first by a regular
get() call.
* [Add ensure_* mathematical
methods](paritytech/substrate#12754)
* The checked_* family of calls returns an Option which is in 99% of the
cases mapped to an error
* ensure_* calls directly return an error which can be propagated using
questionmark operator more easily
* [Kusama shows how to express complex local origins in XCM
messages](paritytech/polkadot#6273)
* Perhaps the most interesting one in this release, would be a good idea
for @weichweich and @ntn-x2 to have a look into this
* [pallet_uniques successor NFTv2 is out! 🥳 😄
](paritytech/substrate#12765)
* Finally we can have NFTs with owner controlled metadata on our chain.
* They even literally mention that this way users can write DIDs
directly on their NFT!