fix(iam): merge OIDC extra root CAs (#5915)

Co-authored-by: heihutu <heihutu@gmail.com>

Cargo.lock

@@ -9493,6 +9493,7 @@ dependencies = [
  "moka",
  "openidconnect",
  "pollster",
+ "rcgen",
  "reqwest",
  "rustfs-config",
  "rustfs-credentials",
@@ -9504,6 +9505,8 @@ dependencies = [
  "rustfs-storage-api",
  "rustfs-test-utils",
  "rustfs-utils",
+ "rustls",
+ "rustls-pki-types",
  "serde",
  "serde_json",
  "serial_test",