Bump indexmap from 1.3.2 to 1.4.0

Bumps [indexmap](https://github.com/bluss/indexmap) from 1.3.2 to 1.4.0.
- [Release notes](https://github.com/bluss/indexmap/releases)
- [Commits](indexmap-rs/indexmap@1.3.2...1.4.0)

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

Author: dependabot-preview[bot]

Cargo.lock

@@ -24,7 +24,7 @@ crossbeam-channel = "0.4"
 ed25519-dalek = "=1.0.0-pre.3"
 fs_extra = "1.1.0"
 flate2 = "1.0"
-indexmap = "1.3"
+indexmap = "1.4"
 itertools = "0.9.0"
 jsonrpc-core = "14.1.0"
 jsonrpc-core-client = { version = "14.1.0", features = ["ws"] }

core/Cargo.toml

@@ -14,7 +14,7 @@ clap = "2.33.0"
 console = "0.11.3"
 csv = "1.1.3"
 dirs = "2.0.2"
-indexmap = "1.3.2"
+indexmap = "1.4.0"
 indicatif = "0.14.0"
 pickledb = "0.4.1"
 serde = { version = "1.0", features = ["derive"] }