Bump openssl from 0.10.68 to 0.10.70

Bumps [openssl](https://github.com/sfackler/rust-openssl) from 0.10.68 to 0.10.70.
- [Release notes](https://github.com/sfackler/rust-openssl/releases)
- [Commits](sfackler/rust-openssl@openssl-v0.10.68...openssl-v0.10.70)

---
updated-dependencies:
- dependency-name: openssl
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.lock

@@ -13,7 +13,7 @@ anyhow = "1.0.93"
 fasyslog = { git = "https://github.com/koenw/fasyslog.git", rev = "805e4497b5bdc87acf570c69765363215946289e", features = ["native-tls"] }
 log = { version = "0.4.22", features = ["kv", "kv_std"] }
 native-tls = "0.2.12"
-openssl = "0.10.68"
+openssl = "0.10.70"
 pretty_env_logger = "0.5.0"
 structopt = { version = "0.3.26", features = ["color", "doc", "wrap_help"] }
 syslog_loose = "0.21.0"