Bump indexmap from 1.5.1 to 1.5.2 (#679)

Cargo.lock

@@ -421,9 +421,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "1.5.1"
+version = "1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b45e59b16c76b11bf9738fd5d38879d3bd28ad292d7b313608becb17ae2df9"
+checksum = "4e47a3566dd4fd4eec714ae6ceabdee0caec795be835c223d92c2d40f1e8cf1c"
 dependencies = [
  "autocfg",
  "hashbrown",

boa/Cargo.toml

@@ -23,7 +23,7 @@ rustc-hash = "1.1.0"
 num-bigint = { version = "0.3.0", features = ["serde"] }
 num-integer = "0.1.43"
 bitflags = "1.2.1"
-indexmap = "1.5.1"
+indexmap = "1.5.2"
 ryu-js = "0.2.0"
 chrono = "0.4.15"