[Renovate] Update Rust crate indexmap to 2.9.0

Author: renovate[bot]

Cargo.lock

@@ -432,9 +432,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.7.1"
+version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c9c992b02b5b4c94ea26e32fe5bccb7aa7d9f390ab5c1221ff895bc7ea8b652"
+checksum = "cea70ddb795996207ad57735b50c5982d8844f38ba9ee5f1aedcfb708a2aa11e"
 dependencies = [
  "equivalent",
  "hashbrown",

Cargo.toml

@@ -20,7 +20,7 @@ version = "0.20.0"
 
 [dependencies.indexmap]
 features = ["serde"]
-version = "2.7.1"
+version = "2.9.0"
 
 [dependencies.quick-xml]
 features = ["serialize"]