Fix CI issues and cut a release

[declanvk]

CI is failing due to an issue with Zlib:

/home/runner/.cargo/bin/cargo test
    Updating crates.io index
warning: spurious network error (2 tries remaining): bad packet length; class=Net (12)
Warning: warning: spurious network error (1 tries remaining): bad packet length; class=Net (12)
error: failed to get `bumpalo` as a dependency of package `dancing-links v0.2.0 (/home/runner/work/dancing-links/dancing-links)`
Error: failed to get `bumpalo` as a dependency of package `dancing-links v0.2.0 (/home/runner/work/dancing-links/dancing-links)`
Caused by:
  failed to load source for dependency `bumpalo`

Caused by:
  Unable to update registry `[https://github.com/rust-lang/crates.io-index`](https://github.com/rust-lang/crates.io-index%60)

Caused by:
  failed to fetch `[https://github.com/rust-lang/crates.io-index`](https://github.com/rust-lang/crates.io-index%60)

Caused by:
  error reading from the zlib stream; class=Zlib (5)
Error: The process '/home/runner/.cargo/bin/cargo' failed with exit code 101

src

---

Searching for the issue turned up rust-lang/cargo#10303, which is an open issue. The work around seems to be adding CARGO_NET_GIT_FETCH_WITH_CLI=true to the environment variables.

Its not clear to me if this issue would also be fixed with a newer version of rust?

[declanvk]

Cut the release https://github.com/declanvk/dancing-links/releases/tag/v0.3.0