Bump shiplift from 0.5.0 to 0.6.0

Bumps [shiplift](https://github.com/softprops/shiplift) from 0.5.0 to 0.6.0.
- [Release notes](https://github.com/softprops/shiplift/releases)
- [Changelog](https://github.com/softprops/shiplift/blob/master/CHANGELOG.md)
- [Commits](softprops/shiplift@0.5.0...v0.6.0)

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

Author: dependabot-preview[bot]

Cargo.lock

@@ -24,7 +24,7 @@ rust_bitcoin = { version = "0.19.1", package = "bitcoin", features = ["use-serde
 secp256k1 = { version = "0.12", features = ["rand"] }
 serde = "1"
 serde_json = "1"
-shiplift = { version = "0.5", default-features = false }
+shiplift = { version = "0.6", default-features = false }
 signal-hook = { version = "0.1", features = ["tokio-support"] }
 structopt = "0.3"
 tar = "0.4.26"