chore(rust): subscription_stream_task() uses async handlers

[rafal-ch]

Description

This PR makes a small improvement to the IPFS subscription stream task so that it accepts handlers which return futures. This allows the handler to be async.

It also bumps the crate version.

Related Issue(s)

n/a

Description of Changes

See Description above.

Breaking Changes

Describe any breaking changes and the impact.

Screenshots

n/a

Related Pull Requests

Required for Hermes improvements begin prepared here: input-output-hk/hermes#797

Please confirm the following checks

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream module

[github-actions]

📚 Docs Preview

The docs for this PR can be previewed at the following URL:

https://docs.dev.projectcatalyst.io/libs/updates_to_async_in_hermes_ipfs

[github-actions]

✅ Test Report | ${\color{lightgreen}Pass: 728/728}$ | ${\color{red}Fail: 0/728}$ |

[cong-or]

LGTM