Merge pull request #441 from mehcode/dependabot/cargo/indexmap-2.0.0

Update indexmap requirement from 1.7.0 to 2.0.0

Author: matthiasbeyer

Cargo.toml

@@ -36,7 +36,7 @@ yaml-rust = { version = "0.4", optional = true }
 rust-ini = { version = "0.18", optional = true }
 ron = { version = "0.8", optional = true }
 json5_rs = { version = "0.4", optional = true, package = "json5" }
-indexmap = { version = "1.7.0", features = ["serde-1"], optional = true}
+indexmap = { version = "2.0.0", features = ["serde"], optional = true }
 convert_case = { version = "0.6", optional = true }
 pathdiff = "0.2"