Bump malachite-* from 0.6.1 to 0.8.0 (RustPython#6344)

* Bump malachite-base from 0.6.1 to 0.8.0

Bumps [malachite-base](https://github.com/mhogrefe/malachite) from 0.6.1 to 0.8.0.
- [Release notes](https://github.com/mhogrefe/malachite/releases)
- [Commits](mhogrefe/malachite@v0.6.1...v0.8.0)

---
updated-dependencies:
- dependency-name: malachite-base
  dependency-version: 0.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

* Bump malachite-*

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jeong, YunWon <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -179,9 +179,9 @@ libc = "0.2.177"
 libffi = "4.1"
 log = "0.4.28"
 nix = { version = "0.30", features = ["fs", "user", "process", "term", "time", "signal", "ioctl", "socket", "sched", "zerocopy", "dir", "hostname", "net", "poll"] }
-malachite-bigint = "0.6"
-malachite-q = "0.6"
-malachite-base = "0.6"
+malachite-bigint = "0.8"
+malachite-q = "0.8"
+malachite-base = "0.8"
 memchr = "2.7.4"
 num-complex = "0.4.6"
 num-integer = "0.1.46"