Bump pem from 1.1.0 to 1.1.1 in /src/rust (#8043)

Bumps [pem](https://github.com/jcreekmore/pem-rs) from 1.1.0 to 1.1.1.
- [Release notes](https://github.com/jcreekmore/pem-rs/releases)
- [Changelog](https://github.com/jcreekmore/pem-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jcreekmore/pem-rs/compare/v1.1.0...v1.1.1)

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

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src/rust/Cargo.lock

@@ -357,9 +357,9 @@ dependencies = [
 
 [[package]]
 name = "pem"
-version = "1.1.0"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "03c64931a1a212348ec4f3b4362585eca7159d0d09cbdf4a7f74f02173596fd4"
+checksum = "a8835c273a76a90455d7344889b0964598e3316e2a79ede8e36f16bdcf2228b8"
 dependencies = [
  "base64",
 ]