Update rustls-pemfile requirement from 0.3 to 1.0

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/0.3.0...v/1.0.0)

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

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

Cargo.toml

@@ -41,7 +41,7 @@ log = "0.4"
 pin-project-lite = "0.2.8"
 rustls = { version = "0.20", optional = true }
 rustls-native-certs = { version = "0.6.0", optional = true }
-rustls-pemfile = { version = "0.3", optional = true }
+rustls-pemfile = { version = "1.0", optional = true }
 serde = "1.0"
 serde_derive = "1.0"
 serde_json = "1.0"