Bump rustler_codegen from 0.25.0 to 0.26.0 in /native/excoding

Bumps [rustler_codegen](https://github.com/rusterlium/rustler) from 0.25.0 to 0.26.0.
- [Release notes](https://github.com/rusterlium/rustler/releases)
- [Changelog](https://github.com/rusterlium/rustler/blob/master/CHANGELOG.md)
- [Commits](rusterlium/rustler@rustler-0.25.0...rustler-0.26.0)

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

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

Author: dependabot[bot]

native/excoding/Cargo.lock

@@ -11,6 +11,6 @@ crate-type = ["cdylib"]
 
 [dependencies]
 rustler = "0.26.0"
-rustler_codegen = "0.25.0"
+rustler_codegen = "0.26.0"
 lazy_static = "1.4"
 encoding = "0.2.33"