Bump tokio from 0.1.22 to 1.15.0 in /node

[dependabot]

Bumps tokio from 0.1.22 to 1.15.0.

Release notes

Sourced from tokio's releases.

Tokio v1.15.0

Fixed

• io: add cooperative yielding support to io::empty() (#4300)
• time: make timeout robust against budget-depleting tasks (#4314)

Changed

• update minimum supported Rust version to 1.46.

Added

• time: add Interval::reset() (#4248)
• io: add explicit lifetimes to AsyncFdReadyGuard (#4267)
• process: add Command::as_std() (#4295)

Added (unstable)

• tracing: instrument tokio::sync types (#4302)

#4302: tokio-rs/tokio#4302 #4300: tokio-rs/tokio#4300 #4295: tokio-rs/tokio#4295 #4267: tokio-rs/tokio#4267 #4248: tokio-rs/tokio#4248 #4314: tokio-rs/tokio#4314

Tokio v1.14.1

This release backports a bug fix from 1.16.1

Fixes a soundness bug in io::Take (#4428). The unsoundness is exposed when leaking memory in the given AsyncRead implementation and then overwriting the supplied buffer:

impl AsyncRead for Buggy {
    fn poll_read(
        self: Pin<&mut Self>,
        cx: &mut Context<'_>,
        buf: &mut ReadBuf<'_>
    ) -> Poll<Result<()>> {
      let new_buf = vec![0; 5].leak();
      *buf = ReadBuf::new(new_buf);
      buf.put_slice(b"hello");
      Poll::Ready(Ok(()))
    }
}

Fixed

... (truncated)

Commits

• f646735 chore: prepare Tokio v1.15.0 release (#4320)
• 54e6693 time: make timeout robust against budget-depleting tasks (#4314)
• 4e3268d tracing: instrument more resources (#4302)
• 4b6bb1d chore(util): start v0.7 release cycle (#4313)
• eb1af7f io: make tokio::io::empty cooperative (#4300)
• 0bc9160 chore: update labeler.yml to drop filepath prefixes (#4308)
• 4c571b5 runtime: fix typo in the task modules (#4306)
• 60ba634 time: fix typo in tokio-time document (#4304)
• f73ed1f runtime: fix typo (#4303)
• ee4b2ed process: add as_std() method to Command (#4295)
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