Bump libflate from 2.0.0 to 2.1.0 in /lang/rust (#2884)

Bumps [libflate](https://github.com/sile/libflate) from 2.0.0 to 2.1.0.
- [Release notes](https://github.com/sile/libflate/releases)
- [Commits](sile/libflate@2.0.0...2.1.0)

---
updated-dependencies:
- dependency-name: libflate
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

lang/rust/avro/Cargo.toml

@@ -59,7 +59,7 @@ bigdecimal = { default-features = false, version = "0.4.3", features = ["std", "
 bzip2 = { default-features = false, version = "0.4.4", optional = true }
 crc32fast = { default-features = false, version = "1.4.0", optional = true }
 digest = { default-features = false, version = "0.10.7", features = ["core-api"] }
-libflate = { default-features = false, version = "2.0.0", features = ["std"] }
+libflate = { default-features = false, version = "2.1.0", features = ["std"] }
 log = { workspace = true }
 num-bigint = { default-features = false, version = "0.4.4", features = ["std", "serde"] }
 regex-lite = { default-features = false, version = "0.1.5", features = ["std", "string"] }