Update Rust version, deps and workflow

- Update Rust to v1.65.0
- Update dependencies
- Updated workflow files
- Added some extra clippy checks
- Fixed some clippy checks

src/auth.rs

@@ -25,13 +25,13 @@ static JWT_ADMIN_ISSUER: Lazy<String> = Lazy::new(|| format!("{}|admin", CONFIG.
 static JWT_SEND_ISSUER: Lazy<String> = Lazy::new(|| format!("{}|send", CONFIG.domain_origin()));
 
 static PRIVATE_RSA_KEY_VEC: Lazy<Vec<u8>> = Lazy::new(|| {
-    std::fs::read(&CONFIG.private_rsa_key()).unwrap_or_else(|e| panic!("Error loading private RSA Key.\n{}", e))
+    std::fs::read(CONFIG.private_rsa_key()).unwrap_or_else(|e| panic!("Error loading private RSA Key.\n{}", e))
 });
 static PRIVATE_RSA_KEY: Lazy<EncodingKey> = Lazy::new(|| {
     EncodingKey::from_rsa_pem(&PRIVATE_RSA_KEY_VEC).unwrap_or_else(|e| panic!("Error decoding private RSA Key.\n{}", e))
 });
 static PUBLIC_RSA_KEY_VEC: Lazy<Vec<u8>> = Lazy::new(|| {
-    std::fs::read(&CONFIG.public_rsa_key()).unwrap_or_else(|e| panic!("Error loading public RSA Key.\n{}", e))
+    std::fs::read(CONFIG.public_rsa_key()).unwrap_or_else(|e| panic!("Error loading public RSA Key.\n{}", e))
 });
 static PUBLIC_RSA_KEY: Lazy<DecodingKey> = Lazy::new(|| {
     DecodingKey::from_rsa_pem(&PUBLIC_RSA_KEY_VEC).unwrap_or_else(|e| panic!("Error decoding public RSA Key.\n{}", e))