Update rustls-pemfile requirement from 0.2.1 to 0.3.0

Updates the requirements on [rustls-pemfile](https://github.com/rustls/pemfile) to permit the latest version.
- [Release notes](https://github.com/rustls/pemfile/releases)
- [Commits](rustls/pemfile@v/0.2.1...v/0.3.0)

---
updated-dependencies:
- dependency-name: rustls-pemfile
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.toml

@@ -22,7 +22,7 @@ hyper = { version = "0.14.2", features = ["client", "runtime", "http2"] }
 hyper-rustls = { version = "0.23.0", default-features = false, features = ["native-tokio", "http1", "http2"] }
 ring = "0.16.20"
 rustls = "0.20.2"
-rustls-pemfile = "0.2.1"
+rustls-pemfile = "0.3.0"
 serde = {version = "1.0", features = ["derive", "rc"]}
 serde_json = "1.0"
 thiserror = "1.0"