Update criterion requirement from 0.3.6 to 0.4.0

Updates the requirements on [criterion](https://github.com/bheisler/criterion.rs) to permit the latest version.
- [Release notes](https://github.com/bheisler/criterion.rs/releases)
- [Changelog](https://github.com/bheisler/criterion.rs/blob/master/CHANGELOG.md)
- [Commits](bheisler/criterion.rs@0.3.6...0.4.0)

---
updated-dependencies:
- dependency-name: criterion
  dependency-type: direct:production
...

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

Author: dependabot[bot]

plotters-bitmap/Cargo.toml

@@ -34,7 +34,7 @@ features = ["ttf", "line_series", "bitmap_backend"]
 path = "../plotters"
 
 [dev-dependencies]
-criterion = "0.3.6"
+criterion = "0.4.0"
 rayon = "1.5.1"
 
 [[bench]]

plotters/Cargo.toml

@@ -112,7 +112,7 @@ deprecated_items = [] # Keep some of the deprecated items for backward compatibi
 
 [dev-dependencies]
 itertools = "0.10.0"
-criterion = "0.3.6"
+criterion = "0.4.0"
 rayon = "1.5.1"
 serde_json = "1.0.82"
 serde = "1.0.139"