Bump subxt from 9e2acff to 1c5faf3

Bumps [subxt](https://github.com/paritytech/subxt) from `9e2acff` to `1c5faf3`.
- [Release notes](https://github.com/paritytech/subxt/releases)
- [Commits](paritytech/subxt@9e2acff...1c5faf3)

---
updated-dependencies:
- dependency-name: subxt
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>