Bump dirs from 3.0.2 to 4.0.0

Bumps [dirs](https://github.com/soc/dirs-rs) from 3.0.2 to 4.0.0.
- [Release notes](https://github.com/soc/dirs-rs/releases)
- [Commits](https://github.com/soc/dirs-rs/commits)

---
updated-dependencies:
- dependency-name: dirs
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Cargo.lock

@@ -78,9 +78,9 @@ dependencies = [
 
 [[package]]
 name = "dirs"
-version = "3.0.2"
+version = "4.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30baa043103c9d0c2a57cf537cc2f35623889dc0d405e6c3cccfadbc81c71309"
+checksum = "ca3aa72a6f96ea37bbc5aa912f6788242832f75369bdfdadcb0e38423f100059"
 dependencies = [
  "dirs-sys",
 ]

Cargo.toml

@@ -8,7 +8,7 @@ edition = "2018"
 [dependencies]
 chrono = { version = "0.4", features = ["serde"] }
 clap = "2.33"
-dirs = "3.0"
+dirs = "4.0"
 env_logger = "0.8"
 log = "*"
 serde = "*"