Bump indexmap from 1.6.0 to 1.6.1

Bumps [indexmap](https://github.com/bluss/indexmap) from 1.6.0 to 1.6.1.
- [Release notes](https://github.com/bluss/indexmap/releases)
- [Commits](https://github.com/bluss/indexmap/compare/1.6.0...1.6.1)

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

Cargo.lock

@@ -262,9 +262,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.6.0"
+version = "1.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55e2e4c765aa53a0424761bf9f41aa7a6ac1efa87238f59560640e27fca028f2"
+checksum = "4fb1fa934250de4de8aef298d81c729a7d33d8c239daa3a7575e6b92bfc7313b"
 dependencies = [
  "autocfg",
  "hashbrown",

Cargo.toml

@@ -36,7 +36,7 @@ itertools = "^0.9.0"
 zopfli = { version = "^0.4.0", optional = true }
 miniz_oxide = "0.4"
 rgb = "0.8.25"
-indexmap = "1.6.0"
+indexmap = "1.6.1"
 libdeflater = { version = "0.7.1", optional = true }
 log = "0.4.11"
 stderrlog = { version = "0.5.0", optional = true }