Bumps [subxt](https://github.com/paritytech/subxt) from 0.31.0 to 0.32.0.
- [Release notes](https://github.com/paritytech/subxt/releases)
- [Changelog](https://github.com/paritytech/subxt/blob/master/CHANGELOG.md)
- [Commits](https://github.com/paritytech/subxt/commits)

---
updated-dependencies:
- dependency-name: subxt
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

* polkadot-staging for v1.0.0

* Add polkadot bulletin chain primitives (#2542)

* add polkadot bulletin chain primitives

* also impl ChainWithMessages

* clippy

* instead of requiring sp_std::vec::Vec import when using runtime API generation macro, let's use full type path directly in macro (#2551)

* Polkadot Bulletin Chain client (#2552)

* relay-polkadot-bulletin-client

* generate Polkadot Bulletin Chain Runtime

* Add relays that will be used in Polkadot Bulletin <> Polkadot.BH bridge (#2556)

* added Polkadot.BH <> Polkadot Bulletin chain relays

* uncommented ED stuff

* complex PolkadotBulletin <> Polkadot.BH relay

* removed TODO

* spelling

* prepare refund extension infra to add refund extension for messages from standalone chain (#2558)

* prepare refund extension infra to add refund extension for messages from standalone chain

* spelling

* apply adapter to fix compilation

* clippy

* added POLKADOT_BULLETIN_CHAIN_ID constant

* RefundBridgedGrandpaMessages to refund transaction costs for messages coming to/from bridged standalone/relay chain (#2566)

* RefundBridgedGrandpaMessages to refund transaction costs for messages coming to/from bridged standalone/relay chain

* clippy

* fix compilation

* fix codec dependency (#2567)

* Support message relay limits override (#2570)

* support message relay limits overrides for bridges

* spelling

* export EXTRA_STORAGE_PROOF_SIZE for Polkadot Bulletin (#2572)