cargo: bump native-tls from 0.2.7 to 0.2.8 (#2597)

Bumps [native-tls](https://github.com/sfackler/rust-native-tls) from 0.2.7 to 0.2.8.
- [Release notes](https://github.com/sfackler/rust-native-tls/releases)
- [Changelog](https://github.com/sfackler/rust-native-tls/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sfackler/rust-native-tls/compare/v0.2.7...v0.2.8)

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

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

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

Cargo.lock

@@ -2314,9 +2314,9 @@ checksum = "16cf681a23b4d0a43fc35024c176437f9dcd818db34e0f42ab456a0ee5ad497b"
 
 [[package]]
 name = "native-tls"
-version = "0.2.7"
+version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8d96b2e1c8da3957d58100b09f102c6d9cfdfced01b7ec5a8974044bb09dbd4"
+checksum = "48ba9f7719b5a0f42f338907614285fb5fd70e53858141f69898a1fb7203b24d"
 dependencies = [
  "lazy_static",
  "libc",

Cargo.toml

@@ -42,7 +42,7 @@ lettre_email = { git = "https://github.com/deltachat/lettre", branch = "master"
 libc = "0.2.101"
 log = {version = "0.4.8", optional = true }
 mailparse = "0.13.5"
-native-tls = "0.2.3"
+native-tls = "0.2.8"
 num_cpus = "1.13.0"
 num-derive = "0.3.0"
 num-traits = "0.2.6"