Update rustls-pemfile requirement from =2.0.0-alpha.1 to =2.0.0-alpha.2

Updates the requirements on [rustls-pemfile](https://github.com/rustls/pemfile) to permit the latest version.
- [Commits](https://github.com/rustls/pemfile/commits)

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

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

Cargo.toml

@@ -20,7 +20,7 @@ percent-encoding = "2.3"
 rcgen = "0.11.1"
 reqwest = { version = "0.11", features = ["rustls-tls-manual-roots"] }
 ring = "0.17.0"
-rustls-pemfile = "=2.0.0-alpha.1"
+rustls-pemfile = "=2.0.0-alpha.2"
 serde = { version = "1.0.183", features = ["derive"] }
 tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
 webpki = { package = "rustls-webpki", version = "=0.102.0-alpha.7", features = ["alloc"] }